fix: a popup reload no longer logs the requests it cancels on most screens (closes #475)

The transaction lists and ENS name lookups on the address and token
screens, the address scan after a wallet is created, the endpoint checks
in Settings, the wait screen's receipt check, the Send screen's Max fee
estimate and the token lookup on both add-token screens now check the
signal the popup aborts on pagehide before reporting a failed request.
scanForAddresses(), resolveEnsNames() and lookupTokenInfo() take the
signal.

End-to-end tests reload the popup on the address screen and during the
address scan with their requests held. Jest tests show each of these
reports a real failure and stays silent once the popup has closed. The
transaction detail and confirmation screens are left out: they discard
the popup context that carries the signal.

Model: opus-5-5

TODO.md

@@ -45,6 +45,22 @@ but the review is broader than any of them.
 
 # Completed Steps
 
+- 2026-10-06: Reloading or closing the popup no longer logs a request it cancels
+  as a failure in the transaction lists and ENS name lookups on the address and
+  token screens, the address scan after a wallet is created, the endpoint checks
+  in Settings, the wait screen's receipt check, the Send screen's Max fee
+  estimate, or the token lookup on the two add-token screens
+  ([#475](https://git.eeqj.de/sneak/AutistMask/issues/475)). Each checks the
+  signal the popup aborts on `pagehide`
+  ([#218](https://git.eeqj.de/sneak/AutistMask/issues/218)) before reporting a
+  failure; a real failure is still logged. `scanForAddresses()`,
+  `resolveEnsNames()` and `lookupTokenInfo()` take the signal. The e2e suite
+  reloads the popup on the address screen with Blockscout held, and during the
+  address scan with that scan held; jest tests cover each of these with the
+  popup open and closed. Left out: the transaction detail screen and the
+  confirmation screen (its fee estimate and its recipient checks), because they
+  discard the popup context that carries the signal.
+
 - 2026-10-06: The private key export screen opens again in the same popup
   session ([#460](https://git.eeqj.de/sneak/AutistMask/issues/460)). `show()`
   found the address line through the element inside it, which its own rendering

src/popup/views/addToken.js

@@ -51,6 +51,7 @@ function init(ctx) {
                 contractAddr,
                 state.rpcUrl,
                 state.networkId,
+                ctx.pageClosed,
             );
             log.infof("Adding token", info.symbol, contractAddr);
             state.trackedTokens.push({
@@ -68,6 +69,9 @@ function init(ctx) {
             }
             require("./addressDetail").show();
         } catch (e) {
+            // Cancelled by the popup closing, not failed: see pageClosed in
+            // src/popup/index.js.
+            if (ctx.pageClosed.aborted) return;
             const detail = e.shortMessage || e.message || String(e);
             log.errorf("Adding token failed for", contractAddr, detail);
             // lookupTokenInfo() rejects a contract with a one-line message

src/popup/views/addWallet.js

@@ -190,7 +190,12 @@ async function importMnemonic(ctx) {
 
     // Scan for used HD addresses beyond index 0.
     showFlash("Scanning for addresses...", 30000);
-    const scan = await scanForAddresses(xpub, state.rpcUrl, state.networkId);
+    const scan = await scanForAddresses(
+        xpub,
+        state.rpcUrl,
+        state.networkId,
+        ctx.pageClosed,
+    );
     if (scan.addresses.length > 1) {
         wallet.addresses = scan.addresses.map((a) => ({
             address: a.address,
@@ -300,7 +305,12 @@ async function importXprvKey(ctx) {
 
     // Scan for used HD addresses beyond index 0.
     showFlash("Scanning for addresses...", 30000);
-    const scan = await scanForAddresses(xpub, state.rpcUrl, state.networkId);
+    const scan = await scanForAddresses(
+        xpub,
+        state.rpcUrl,
+        state.networkId,
+        ctx.pageClosed,
+    );
     if (scan.addresses.length > 1) {
         wallet.addresses = scan.addresses.map((a) => ({
             address: a.address,

src/popup/views/addressDetail.js

@@ -135,6 +135,7 @@ async function loadTransactions(address) {
                     counterparties,
                     state.rpcUrl,
                     state.networkId,
+                    ctx.pageClosed,
                 );
             } catch {
                 ensNameMap = new Map();
@@ -143,6 +144,9 @@ async function loadTransactions(address) {
 
         renderTransactions(txs);
     } catch (e) {
+        // Cancelled by the popup closing, not failed: see pageClosed in
+        // src/popup/index.js.
+        if (ctx.pageClosed.aborted) return;
         log.errorf("loadTransactions failed:", e.message);
         $("tx-list").innerHTML =
             '<div class="text-muted text-xs py-1">Failed to load transactions.</div>';

src/popup/views/addressToken.js

@@ -219,6 +219,7 @@ async function loadTransactions(address, tokenId) {
                     counterparties,
                     state.rpcUrl,
                     state.networkId,
+                    ctx.pageClosed,
                 );
             } catch {
                 ensNameMap = new Map();
@@ -227,6 +228,9 @@ async function loadTransactions(address, tokenId) {
 
         renderTransactions(txs);
     } catch (e) {
+        // Cancelled by the popup closing, not failed: see pageClosed in
+        // src/popup/index.js.
+        if (ctx.pageClosed.aborted) return;
         log.errorf("loadTransactions failed:", e.message);
         $("address-token-tx-list").innerHTML =
             '<div class="text-muted text-xs py-1">Failed to load transactions.</div>';

src/popup/views/send.js

@@ -292,6 +292,9 @@ async function fillMaxAmount() {
         ]);
         feeWei = feeReserveWei(gasLimit, feeData);
     } catch (e) {
+        // Cancelled by the popup closing, not failed: see pageClosed in
+        // src/popup/index.js.
+        if (ctx.pageClosed.aborted) return;
         log.errorf(
             "max amount fee estimate failed:",
             e.shortMessage || e.message,

src/popup/views/settings.js

@@ -273,6 +273,9 @@ function init(ctx) {
                 return;
             }
         } catch {
+            // Cancelled by the popup closing, not failed: see pageClosed in
+            // src/popup/index.js.
+            if (ctx.pageClosed.aborted) return;
             // Not the error's message: fetch puts the whole URL, password and
             // key included, in the message of the error it throws for a URL
             // with a user name and password or one it cannot parse.
@@ -299,6 +302,7 @@ function init(ctx) {
                 return;
             }
         } catch {
+            if (ctx.pageClosed.aborted) return;
             // Not the error's message, as for the RPC check above.
             log.errorf("Blockscout validation failed:", urlOrigin(url));
             showFlash("Could not reach endpoint.");

src/popup/views/settingsAddToken.js

@@ -135,6 +135,7 @@ function init(_ctx) {
                 addr,
                 state.rpcUrl,
                 state.networkId,
+                ctx.pageClosed,
             );
             log.infof("Adding token", info.symbol, addr);
             state.trackedTokens.push({
@@ -152,6 +153,9 @@ function init(_ctx) {
             renderDropdown();
             ctx.doRefreshAndRender();
         } catch (e) {
+            // Cancelled by the popup closing, not failed: see pageClosed in
+            // src/popup/index.js.
+            if (ctx.pageClosed.aborted) return;
             const detail = e.shortMessage || e.message || String(e);
             log.errorf("Adding token failed for", addr, detail);
             // lookupTokenInfo() rejects a contract with a one-line message

src/popup/views/txStatus.js

@@ -132,6 +132,9 @@ function startWait(txInfo, txHash, broadcastTime, pollNow) {
         try {
             receipt = await provider.getTransactionReceipt(txHash);
         } catch (e) {
+            // Cancelled by the popup closing, not failed: see pageClosed in
+            // src/popup/index.js.
+            if (ctx.pageClosed.aborted) return;
             // A thrown lookup means "no answer this tick", not "no
             // receipt": the RPC failed, the chain said nothing. Declaring
             // the timeout off it would report a confirmed transaction as

src/shared/balances.js

@@ -294,7 +294,8 @@ async function refreshBalances(
 
 // Look up token metadata from its contract.
 // Calls symbol() and decimals() to verify it implements ERC-20.
-async function lookupTokenInfo(contractAddress, rpcUrl, networkId) {
+// `signal` is as for fetchTokenBalances().
+async function lookupTokenInfo(contractAddress, rpcUrl, networkId, signal) {
     log.debugf("lookupTokenInfo", contractAddress, "rpc:", urlOrigin(rpcUrl));
     const provider = getProvider(rpcUrl, networkId);
     const contract = new Contract(contractAddress, ERC20_ABI, provider);
@@ -304,7 +305,9 @@ async function lookupTokenInfo(contractAddress, rpcUrl, networkId) {
         symbol = await contract.symbol();
         log.debugf("symbol() =", symbol);
     } catch (e) {
-        log.errorf("symbol() failed:", e.shortMessage || e.message);
+        if (!signal?.aborted) {
+            log.errorf("symbol() failed:", e.shortMessage || e.message);
+        }
         throw new Error("Not a valid ERC-20 token (symbol() failed).");
     }
 
@@ -312,7 +315,9 @@ async function lookupTokenInfo(contractAddress, rpcUrl, networkId) {
         decimals = await contract.decimals();
         log.debugf("decimals() =", decimals);
     } catch (e) {
-        log.errorf("decimals() failed:", e.shortMessage || e.message);
+        if (!signal?.aborted) {
+            log.errorf("decimals() failed:", e.shortMessage || e.message);
+        }
         throw new Error("Not a valid ERC-20 token (decimals() failed).");
     }
 
@@ -320,10 +325,12 @@ async function lookupTokenInfo(contractAddress, rpcUrl, networkId) {
         name = await contract.name();
         log.debugf("name() =", name);
     } catch (e) {
-        log.warnf(
-            "name() failed, using symbol as name:",
-            e.shortMessage || e.message,
-        );
+        if (!signal?.aborted) {
+            log.warnf(
+                "name() failed, using symbol as name:",
+                e.shortMessage || e.message,
+            );
+        }
         name = symbol;
     }
 
@@ -339,7 +346,8 @@ async function lookupTokenInfo(contractAddress, rpcUrl, networkId) {
 // Checks gapLimit addresses in parallel per batch.  Stops when an entire
 // batch has no used addresses (i.e. gapLimit consecutive empty addresses).
 // Returns { addresses: [{ address, index }], nextIndex }.
-async function scanForAddresses(xpub, rpcUrl, networkId, gapLimit = 5) {
+// `signal` is as for fetchTokenBalances().
+async function scanForAddresses(xpub, rpcUrl, networkId, signal, gapLimit = 5) {
     log.debugf("scanForAddresses start, gapLimit:", gapLimit);
     const provider = getProvider(rpcUrl, networkId);
     const used = [];
@@ -362,11 +370,13 @@ async function scanForAddresses(xpub, rpcUrl, networkId, gapLimit = 5) {
                     ]);
                     return { addr, index, isUsed: balance > 0n || txCount > 0 };
                 } catch (e) {
-                    log.errorf(
-                        "scanForAddresses check failed",
-                        addr,
-                        e.shortMessage || e.message,
-                    );
+                    if (!signal?.aborted) {
+                        log.errorf(
+                            "scanForAddresses check failed",
+                            addr,
+                            e.shortMessage || e.message,
+                        );
+                    }
                     return { addr, index, isUsed: false };
                 }
             }),

src/shared/ens.js

@@ -32,7 +32,8 @@ function setCache(address, name) {
     localStorage.setItem(key, JSON.stringify({ name, ts: Date.now() }));
 }
 
-async function resolveEnsName(address, rpcUrl, networkId) {
+// `signal` is as for fetchTokenBalances() in src/shared/balances.js.
+async function resolveEnsName(address, rpcUrl, networkId, signal) {
     const cached = getCached(address);
     if (cached !== undefined) return cached;
 
@@ -42,21 +43,26 @@ async function resolveEnsName(address, rpcUrl, networkId) {
         setCache(address, name);
         return name;
     } catch (e) {
-        log.errorf(
-            "ENS reverse lookup failed",
-            address,
-            e.shortMessage || e.message,
-        );
+        if (!signal?.aborted) {
+            log.errorf(
+                "ENS reverse lookup failed",
+                address,
+                e.shortMessage || e.message,
+            );
+        }
         // Don't cache failures — let subsequent lookups retry
         return null;
     }
 }
 
-async function resolveEnsNames(addresses, rpcUrl, networkId) {
+async function resolveEnsNames(addresses, rpcUrl, networkId, signal) {
     const results = new Map();
     await Promise.all(
         addresses.map(async (addr) => {
-            results.set(addr, await resolveEnsName(addr, rpcUrl, networkId));
+            results.set(
+                addr,
+                await resolveEnsName(addr, rpcUrl, networkId, signal),
+            );
         }),
     );
     return results;

tests/addressScanCancelled.test.js

@@ -0,0 +1,121 @@
+// Creating a wallet from a recovery phrase or an extended private key does not
+// report an address scan request the popup's own closing cancelled, and still
+// reports one that failed while the popup was open
+// (https://git.eeqj.de/sneak/AutistMask/issues/475).
+//
+// In the popup a cancelled request fails with the same "Failed to fetch" as a
+// server that cannot be reached, so every RPC request here fails that way, and
+// only the signal the popup aborts on pagehide tells the two cases apart.
+// Driven against the fake elements tests/tokenLookupCancelled.test.js uses.
+
+const { FetchRequest, HDNodeWallet, Mnemonic } = require("ethers");
+
+const PHRASE =
+    "abandon abandon abandon abandon abandon abandon " +
+    "abandon abandon abandon abandon abandon about";
+const PASSWORD = "correct horse battery staple";
+
+let elements;
+
+function fakeElement() {
+    return {
+        value: "",
+        textContent: "",
+        style: {},
+        classList: { toggle: () => {} },
+        listeners: {},
+        addEventListener(event, handler) {
+            this.listeners[event] = handler;
+        },
+    };
+}
+
+// Stands in for document.getElementById(): one fake element per id.
+function element(id) {
+    return (elements[id] ||= fakeElement());
+}
+
+jest.doMock("../src/popup/views/helpers", () => ({
+    $: element,
+    showView: () => {},
+    showFlash: () => {},
+    goBack: () => {},
+    clearViewStack: () => {},
+    onViewLeave: () => {},
+}));
+
+// state.js reads chrome.storage.local at load, and saveState() writes it.
+globalThis.chrome = {
+    storage: { local: { get: async () => ({}), set: async () => {} } },
+};
+
+const { state } = require("../src/shared/state");
+const addWallet = require("../src/popup/views/addWallet");
+
+let logged;
+
+beforeEach(() => {
+    elements = {};
+    logged = [];
+    state.wallets = [];
+    state.rpcUrl = "https://rpc.example.invalid";
+    state.networkId = "mainnet";
+    for (const method of ["warn", "error"]) {
+        jest.spyOn(console, method).mockImplementation((...args) => {
+            logged.push(args.map(String).join(" "));
+        });
+    }
+    // What the scan found is logged at info level, which is not under test.
+    jest.spyOn(console, "log").mockImplementation(() => {});
+    FetchRequest.registerGetUrl(async () => {
+        throw new TypeError("Failed to fetch");
+    });
+});
+
+afterEach(() => {
+    FetchRequest.registerGetUrl(FetchRequest.createGetUrlFunc());
+    jest.restoreAllMocks();
+});
+
+describe.each([
+    ["a recovery phrase", "mnemonic", "wallet-mnemonic", PHRASE],
+    [
+        "an extended private key",
+        "xprv",
+        "import-xprv-key",
+        HDNodeWallet.fromSeed(Mnemonic.fromPhrase(PHRASE).computeSeed())
+            .extendedKey,
+    ],
+])("creating a wallet from %s", (_name, mode, field, secret) => {
+    // Enters `secret` on the add-wallet screen, presses its button and waits
+    // for the address scan that follows.
+    async function create(pageClosed) {
+        addWallet.init({
+            renderWalletList: () => {},
+            doRefreshAndRender: () => {},
+            pageClosed,
+        });
+        element("tab-" + mode).listeners.click();
+        element(field).value = secret;
+        element("add-wallet-password").value = PASSWORD;
+        element("add-wallet-password-confirm").value = PASSWORD;
+        await element("btn-add-wallet-confirm").listeners.click();
+    }
+
+    test("a scan failure while the popup is open is reported", async () => {
+        await create(new AbortController().signal);
+        expect(state.wallets).toHaveLength(1);
+        expect(logged).not.toEqual([]);
+        for (const line of logged) {
+            expect(line).toContain("scanForAddresses check failed");
+        }
+    });
+
+    test("a scan failure once the popup has closed is not", async () => {
+        const pageClosed = new AbortController();
+        pageClosed.abort();
+        await create(pageClosed.signal);
+        expect(state.wallets).toHaveLength(1);
+        expect(logged).toEqual([]);
+    });
+});

tests/balanceRefreshCancelled.test.js

@@ -1,13 +1,19 @@
-// The balance refresh does not report a request the popup's own closing
-// cancelled, and still reports one that failed while the popup was open
-// (https://git.eeqj.de/sneak/AutistMask/issues/218).
+// The balance refresh, and the address scan after a wallet is created, do not
+// report a request the popup's own closing cancelled, and still report one
+// that failed while the popup was open
+// (https://git.eeqj.de/sneak/AutistMask/issues/218,
+// https://git.eeqj.de/sneak/AutistMask/issues/475).
 //
 // In the popup a cancelled fetch() fails with the same "Failed to fetch" as a
 // server that cannot be reached, so every request here fails that way, and
 // only the signal the popup aborts on pagehide tells the two cases apart.
 
 const { FetchRequest } = require("ethers");
-const { refreshBalances } = require("../src/shared/balances");
+const { refreshBalances, scanForAddresses } = require("../src/shared/balances");
+const {
+    generateMnemonic,
+    hdWalletFromMnemonic,
+} = require("../src/shared/wallet");
 
 const RPC_URL = "https://rpc.example.invalid";
 const EXPLORER_URL = "https://explorer.example.invalid/api/v2";
@@ -24,8 +30,9 @@ beforeEach(() => {
     const failedToFetch = async () => {
         throw new TypeError("Failed to fetch");
     };
-    // The RPC calls (ETH balance, ENS name) and the explorer request (token
-    // balances) all fail the same way.
+    // The RPC calls (ETH balance, ENS name, and the scan's balance and
+    // transaction count) and the explorer request (token balances) all fail
+    // the same way.
     FetchRequest.registerGetUrl(failedToFetch);
     globalThis.fetch = jest.fn(failedToFetch);
 });
@@ -65,3 +72,24 @@ test("a failure once the popup has closed is not", async () => {
     await refresh(pageClosed.signal);
     expect(logged).toEqual([]);
 });
+
+function scan(signal) {
+    // What the scan found is logged at info level, which is not under test.
+    jest.spyOn(console, "log").mockImplementation(() => {});
+    const { xpub } = hdWalletFromMnemonic(generateMnemonic());
+    return scanForAddresses(xpub, RPC_URL, "mainnet", signal);
+}
+
+test("a scan failure while the popup is open is reported", async () => {
+    await scan(new AbortController().signal);
+    expect(
+        logged.some((line) => line.includes("scanForAddresses check failed")),
+    ).toBe(true);
+});
+
+test("a scan failure once the popup has closed is not", async () => {
+    const pageClosed = new AbortController();
+    pageClosed.abort();
+    await scan(pageClosed.signal);
+    expect(logged).toEqual([]);
+});

tests/e2e/network.js

@@ -420,12 +420,12 @@ const HOLD_MAX_MS = 30000;
 
 // Hold a reply open for as long as the test asks: until opts[name] is false.
 //
-// The switch (holdGasEstimate or holdBlockscout) is read here rather than
-// captured, so a test flips it on the same options object the route was
-// registered with — the same pattern as seedTokenTransfer. This is the only way
-// to observe a screen while its request is genuinely in flight; sampling the
-// screen and hoping to win a race against the network would assert nothing on
-// a slow machine.
+// The switch (holdGasEstimate, holdTransactionCount or holdBlockscout) is read
+// here rather than captured, so a test flips it on the same options object the
+// route was registered with — the same pattern as seedTokenTransfer. This is
+// the only way to observe a screen while its request is genuinely in flight;
+// sampling the screen and hoping to win a race against the network would
+// assert nothing on a slow machine.
 //
 // It never gives up quietly. A hold that outlives the bound is reported like
 // any other harness fault, because a "pending" state that stopped being
@@ -560,6 +560,9 @@ async function handleRpc(route, postData, opts, report) {
     if (batch.some((req) => req.method === "eth_estimateGas")) {
         await awaitRelease(opts, "holdGasEstimate", report);
     }
+    if (batch.some((req) => req.method === "eth_getTransactionCount")) {
+        await awaitRelease(opts, "holdTransactionCount", report);
+    }
 
     const replies = batch.map((req) => rpcReply(req, opts, report));
     return jsonResponse(route, Array.isArray(payload) ? replies : replies[0]);
@@ -614,6 +617,8 @@ function traceEnabled(raw) {
  *   node-side refusal.
  * @param {boolean} [opts.holdGasEstimate]  hold every batch containing an
  *   eth_estimateGas until this is cleared again.
+ * @param {boolean} [opts.holdTransactionCount]  hold every batch containing an
+ *   eth_getTransactionCount until this is cleared again.
  * @param {boolean} [opts.holdBlockscout]  hold every Blockscout request until
  *   this is cleared again.
  * @param {boolean} [opts.failTransactionList]  fail every request for an

tests/e2e/run.js

@@ -249,8 +249,23 @@ test("the exact confirmation phrase erases the record and reloads into Welcome (
     }
 });
 
-test("wallet creation through the UI reaches the main view", async (env) => {
-    env.phrase = await createWallet(env.page);
+// The address scan that follows creating the wallet is held, so the popup
+// reloads while it is in flight. As for the reloads mid-refresh further down,
+// the assertion for that is the harness's own: a console.error from the page
+// being reloaded fails this test (#475).
+test("wallet creation through the UI reaches the main view, and reloading mid-scan reports no failure (#475)", async (env) => {
+    env.routeOpts.holdTransactionCount = true;
+    try {
+        const scanning = env.page.waitForRequest((r) =>
+            (r.postData() || "").includes("eth_getTransactionCount"),
+        );
+        env.phrase = await createWallet(env.page);
+        await scanning;
+        await env.page.reload();
+    } finally {
+        env.routeOpts.holdTransactionCount = false;
+    }
+    await visible(env.page, "#view-main");
     assert(
         env.phrase.split(/\s+/).length >= 12,
         "wallet creation did not yield a recovery phrase",
@@ -700,9 +715,8 @@ test("the token contract row links to the explorer's token page (#151)", async (
 //
 // Reloading or closing the popup makes Chrome cancel the requests it still has
 // open, and in the page a cancelled fetch() fails with the same "Failed to
-// fetch" as a server that cannot be reached. Here rather than straight after
-// wallet creation because a reload also cancels the address scan that follows
-// it, which still logs (#475).
+// fetch" as a server that cannot be reached. The reload during the address
+// scan that follows creating a wallet is in the wallet creation test (#475).
 
 // Blockscout is held, so the home screen's transaction list and token balances
 // cannot have been answered when the popup reloads. The assertion is the
@@ -752,6 +766,30 @@ test("a transaction list that cannot be fetched is still reported (#218)", async
     }
 });
 
+// The address screen's transaction list, held the same way. The popup reopens
+// on the address screen, which asks for its list as it is drawn, so once the
+// screen is up its request is in flight (#475).
+test("reloading the popup on the address screen reports no failure (#475)", async (env) => {
+    await openAddressDetail(env.page);
+    await waitForPersisted(
+        env.page,
+        "currentView",
+        "address",
+        "before reloading the popup",
+    );
+    env.routeOpts.holdBlockscout = true;
+    try {
+        await env.page.reload();
+        await visible(env.page, "#view-address");
+        await env.page.reload();
+    } finally {
+        env.routeOpts.holdBlockscout = false;
+    }
+    await visible(env.page, "#view-address");
+    // Home again, where the tests below expect to start.
+    await goHome(env.page);
+});
+
 // -------------------------------------------- recovery phrase (#161)
 
 // The gear toggles, so pressing it while Settings is already up leaves it.
@@ -2161,9 +2199,7 @@ function quantity(wei) {
 
 // Wait on the main view until a changed balance fixture has been picked up.
 //
-// Not a reload: the popup re-refreshes on a 10-second timer by itself, and a
-// reload on the address screen still logs the transaction list it cancels
-// (#475).
+// Not a reload: the popup re-refreshes on a 10-second timer by itself.
 //
 // It also deliberately settles on MAIN rather than on the address screen.
 // The address screen builds the send screen's token dropdown once, from the
@@ -4523,6 +4559,9 @@ async function main() {
         ethBalanceWei: null,
         failGasEstimate: false,
         holdGasEstimate: false,
+        // Whether a JSON-RPC batch asking for a transaction count is held
+        // unanswered: the address scan after creating a wallet (#475).
+        holdTransactionCount: false,
         // Whether Blockscout requests are held unanswered, and whether an
         // address's transaction list fails as a network error (#218).
         holdBlockscout: false,

tests/flashLine.test.js

@@ -91,6 +91,7 @@ describe.each([
 
         require("../src/popup/views/" + view).init({
             doRefreshAndRender: () => {},
+            pageClosed: new AbortController().signal,
         });
         element(field).value = ADDRESS;
         await element(button).listeners.click();

tests/sendMax.test.js

@@ -65,7 +65,7 @@ jest.mock("../src/shared/log", () => ({
         debugf: () => {},
         infof: () => {},
         warnf: () => {},
-        errorf: () => {},
+        errorf: jest.fn(),
     },
     // The explorer's token list, which refreshBalances() also fetches.
     debugFetch: jest.fn(async () => ({
@@ -143,6 +143,7 @@ const { Transaction, Wallet, formatEther } = require("ethers");
 const { refreshBalances } = require("../src/shared/balances");
 const { encryptWithPassword } = require("../src/shared/vault");
 const { state } = require("../src/shared/state");
+const { log } = require("../src/shared/log");
 const send = require("../src/popup/views/send");
 const confirmTx = require("../src/popup/views/confirmTx");
 
@@ -226,10 +227,16 @@ function tokenRow(value, decimals = "18") {
 // The confirmation screen Review leads to, once shown.
 let confirmed = null;
 
+// Stands in for the popup's: aborting it is the popup closing.
+let pageClosed;
+
 // Open the Send screen for `token` ("ETH" or a token address), with the
 // recipient entered.
 function openSend(token = "ETH") {
-    send.init({ showConfirmTx: (info) => (confirmed = info) });
+    send.init({
+        showConfirmTx: (info) => (confirmed = info),
+        pageClosed: pageClosed.signal,
+    });
     confirmTx.init({});
     send.resetSendValidation();
     state.currentView = "send";
@@ -260,6 +267,8 @@ function canSend() {
 
 beforeEach(() => {
     elements.clear();
+    log.errorf.mockClear();
+    pageClosed = new AbortController();
     confirmed = null;
     state.selectedToken = null;
     state.trackedTokens = [];
@@ -447,6 +456,46 @@ describe("Max on an ETH send", () => {
         expect(text("flash-msg")).toBe("");
     });
 
+    // Holds the node's fee answer until the returned function fails it, as a
+    // node that cannot be reached, or a request the popup's closing
+    // cancelled, does.
+    function holdFailingFeeEstimate() {
+        let fail;
+        mockNode.feeData = new Promise((_, reject) => {
+            fail = () => reject(new TypeError("Failed to fetch"));
+        });
+        return fail;
+    }
+
+    test("reports a fee estimate that fails while the popup is open", async () => {
+        await refreshWith(BALANCE_WEI);
+        openSend();
+        const fail = holdFailingFeeEstimate();
+        const pressed = pressMax();
+        fail();
+        await pressed;
+        expect(log.errorf).toHaveBeenCalledWith(
+            "max amount fee estimate failed:",
+            "Failed to fetch",
+        );
+        expect(text("flash-msg")).toBe(
+            "The network fee could not be estimated.",
+        );
+    });
+
+    // https://git.eeqj.de/sneak/AutistMask/issues/475
+    test("does not report a fee estimate that fails once the popup has closed", async () => {
+        await refreshWith(BALANCE_WEI);
+        openSend();
+        const fail = holdFailingFeeEstimate();
+        const pressed = pressMax();
+        pageClosed.abort();
+        fail();
+        await pressed;
+        expect(log.errorf).not.toHaveBeenCalled();
+        expect(el("send-amount").value).toBe("");
+    });
+
     test("fills in once the held fee estimate arrives with nothing changed", async () => {
         await refreshWith(BALANCE_WEI);
         openSend();

tests/settingsEndpointCheck.test.js

@@ -50,7 +50,8 @@ function element(id) {
     return (elements[id] ||= fakeElement());
 }
 
-function loadSettingsView() {
+// `pageClosed` stands in for the popup's: aborting it is the popup closing.
+function loadSettingsView(pageClosed = new AbortController()) {
     elements = {};
     flashes = [];
 
@@ -74,7 +75,9 @@ function loadSettingsView() {
     state.blockscoutUrl = SAVED_BLOCKSCOUT;
     require("../src/shared/log").setRuntimeDebug(true);
 
-    require("../src/popup/views/settings").init({});
+    require("../src/popup/views/settings").init({
+        pageClosed: pageClosed.signal,
+    });
 }
 
 async function save(fieldId, buttonId, typed) {
@@ -146,3 +149,21 @@ test("the Blockscout check of a URL with a user name and password", async () =>
     const line = expectFailedWithoutSecrets("Blockscout validation failed");
     expect(line).toContain("https://explorer.example.invalid");
 });
+
+// In the popup a check its own closing cancelled fails as these do, and is
+// not reported (https://git.eeqj.de/sneak/AutistMask/issues/475). Nothing is
+// saved either.
+test("a check that fails once the popup has closed is not reported", async () => {
+    const pageClosed = new AbortController();
+    pageClosed.abort();
+    loadSettingsView(pageClosed);
+    await save("settings-rpc", "btn-save-rpc", RPC_UNPARSEABLE);
+    await save(
+        "settings-blockscout",
+        "btn-save-blockscout",
+        BLOCKSCOUT_WITH_PASSWORD,
+    );
+    expect(console.error).not.toHaveBeenCalled();
+    expect(state.rpcUrl).toBe(SAVED_RPC);
+    expect(state.blockscoutUrl).toBe(SAVED_BLOCKSCOUT);
+});

tests/tokenLookupCancelled.test.js

@@ -0,0 +1,167 @@
+// The two add-token screens do not report a token lookup the popup's own
+// closing cancelled, and still report one that failed while the popup was open
+// (https://git.eeqj.de/sneak/AutistMask/issues/475).
+//
+// In the popup a cancelled request fails with the same "Failed to fetch" as a
+// server that cannot be reached, so every RPC request here fails that way, and
+// only the signal the popup aborts on pagehide tells the two cases apart. The
+// real lookupTokenInfo() runs, which logs a failed lookup itself before the
+// screen does. Driven against the fake elements tests/flashLine.test.js uses.
+// The last tests call lookupTokenInfo() directly with symbol() answered, so
+// that its later calls are the ones that fail.
+
+const {
+    FetchRequest,
+    Interface,
+    toUtf8Bytes,
+    toUtf8String,
+} = require("ethers");
+const { ERC20_ABI } = require("../src/shared/constants");
+
+const ADDRESS = "0x1111111111111111111111111111111111111111";
+const RPC_URL = "https://rpc.example.invalid";
+
+let elements;
+
+function fakeElement() {
+    return {
+        value: "",
+        textContent: "",
+        style: {},
+        listeners: {},
+        addEventListener(event, handler) {
+            this.listeners[event] = handler;
+        },
+    };
+}
+
+// Stands in for document.getElementById(): one fake element per id.
+function element(id) {
+    return (elements[id] ||= fakeElement());
+}
+
+jest.doMock("../src/popup/views/helpers", () => ({
+    $: element,
+    showView: () => {},
+    showFlash: () => {},
+    escapeHtml: (s) => s,
+    goBack: () => {},
+}));
+
+// state.js reads chrome.storage.local at load.
+globalThis.chrome = {
+    storage: { local: { get: async () => ({}), set: async () => {} } },
+};
+
+const { state } = require("../src/shared/state");
+const { lookupTokenInfo } = require("../src/shared/balances");
+
+let logged;
+
+beforeEach(() => {
+    elements = {};
+    logged = [];
+    state.trackedTokens = [];
+    for (const method of ["warn", "error"]) {
+        jest.spyOn(console, method).mockImplementation((...args) => {
+            logged.push(args.map(String).join(" "));
+        });
+    }
+    FetchRequest.registerGetUrl(async () => {
+        throw new TypeError("Failed to fetch");
+    });
+});
+
+afterEach(() => {
+    FetchRequest.registerGetUrl(FetchRequest.createGetUrlFunc());
+    jest.restoreAllMocks();
+});
+
+describe.each([
+    ["addToken", "add-token-address", "btn-add-token-confirm"],
+    [
+        "settingsAddToken",
+        "settings-addtoken-address",
+        "btn-settings-addtoken-manual",
+    ],
+])("looking up a token on %s", (view, field, button) => {
+    // Clicks the screen's add button for ADDRESS and waits for the lookup.
+    async function add(pageClosed) {
+        require("../src/popup/views/" + view).init({
+            doRefreshAndRender: () => {},
+            pageClosed,
+        });
+        element(field).value = ADDRESS;
+        await element(button).listeners.click();
+    }
+
+    test("a failure while the popup is open is reported", async () => {
+        await add(new AbortController().signal);
+        expect(logged).toHaveLength(2);
+        expect(logged[0]).toContain("symbol() failed:");
+        expect(logged[1]).toBe(
+            "[AutistMask] Adding token failed for " +
+                ADDRESS +
+                " Not a valid ERC-20 token (symbol() failed).",
+        );
+    });
+
+    test("a failure once the popup has closed is not", async () => {
+        const pageClosed = new AbortController();
+        pageClosed.abort();
+        await add(pageClosed.signal);
+        expect(logged).toEqual([]);
+    });
+});
+
+// Answers the contract call for each function named in `answers` with its
+// value, and fails every other request as above.
+function answer(answers) {
+    const erc20 = new Interface(ERC20_ABI);
+    FetchRequest.registerGetUrl(async (req) => {
+        const { id, params } = JSON.parse(toUtf8String(req.body));
+        const { name } = erc20.parseTransaction({ data: params[0].data });
+        if (!(name in answers)) {
+            throw new TypeError("Failed to fetch");
+        }
+        const result = erc20.encodeFunctionResult(name, [answers[name]]);
+        return {
+            statusCode: 200,
+            statusMessage: "OK",
+            headers: {},
+            body: toUtf8Bytes(JSON.stringify({ jsonrpc: "2.0", id, result })),
+        };
+    });
+}
+
+describe.each([
+    ["decimals() fails", { symbol: "TKN" }, "decimals() failed:"],
+    [
+        "name() fails",
+        { symbol: "TKN", decimals: 18 },
+        "name() failed, using symbol as name:",
+    ],
+])("a token lookup where %s", (_, answers, report) => {
+    async function lookUp(pageClosed) {
+        // A token found is logged at info level, which is not under test.
+        jest.spyOn(console, "log").mockImplementation(() => {});
+        answer(answers);
+        // A failed decimals() also fails the lookup, which the screens report
+        // as tested above.
+        await lookupTokenInfo(ADDRESS, RPC_URL, "mainnet", pageClosed).catch(
+            () => {},
+        );
+    }
+
+    test("is reported while the popup is open", async () => {
+        await lookUp(new AbortController().signal);
+        expect(logged).toEqual([expect.stringContaining(report)]);
+    });
+
+    test("is not once the popup has closed", async () => {
+        const pageClosed = new AbortController();
+        pageClosed.abort();
+        await lookUp(pageClosed.signal);
+        expect(logged).toEqual([]);
+    });
+});

tests/transactionListCancelled.test.js

@@ -0,0 +1,181 @@
+// The address and token screens do not report a transaction list, or an ENS
+// name lookup for the addresses in it, that the popup's own closing cancelled,
+// and still report one that failed while the popup was open
+// (https://git.eeqj.de/sneak/AutistMask/issues/475).
+//
+// In the popup a cancelled request fails with the same "Failed to fetch" as a
+// server that cannot be reached, so the requests here fail that way, and only
+// the signal the popup aborts on pagehide tells the two cases apart. Driven
+// against a minimal DOM stub in the shape tests/timestampDisplay.test.js uses.
+
+// The explorer answers with mockHistory, and fails when it is null.
+let mockHistory = null;
+jest.mock("../src/shared/transactions", () => ({
+    ...jest.requireActual("../src/shared/transactions"),
+    fetchRecentTransactions: async () => {
+        if (mockHistory === null) throw new TypeError("Failed to fetch");
+        return mockHistory;
+    },
+}));
+
+// Every ENS name lookup fails.
+jest.mock("../src/shared/balances", () => ({
+    ...jest.requireActual("../src/shared/balances"),
+    getProvider: () => ({
+        lookupAddress: async () => {
+            throw new TypeError("Failed to fetch");
+        },
+    }),
+}));
+
+globalThis.chrome = {
+    storage: { local: { get: async () => ({}), set: async () => {} } },
+};
+
+const { state } = require("../src/shared/state");
+const addressDetail = require("../src/popup/views/addressDetail");
+const addressToken = require("../src/popup/views/addressToken");
+
+const ADDRESS = "0x1111111111111111111111111111111111111111";
+const RECIPIENT = "0x66133E8ea0f5D1d612D2502a968757D1048c214a";
+
+// A transaction ADDRESS sent, as the history lists hold it.
+function historyTx() {
+    return {
+        hash: "0x85215772ed26ea8b39c2b3b18779030487efbe0b5fd7e882592b2f62b837be84",
+        from: ADDRESS,
+        to: RECIPIENT,
+        value: "0.0000",
+        exactValue: "0.0",
+        rawAmount: "0",
+        rawUnit: "wei",
+        symbol: "ETH",
+        timestamp: 1790000000,
+        isError: false,
+        directionLabel: "Sent",
+        direction: "sent",
+        contractAddress: null,
+    };
+}
+
+function makeElement(id) {
+    const el = {
+        id,
+        textContent: "",
+        value: "",
+        innerHTML: "",
+        style: {},
+        dataset: {},
+        classList: {
+            add: () => {},
+            remove: () => {},
+            contains: () => false,
+            toggle: () => false,
+        },
+        addEventListener: () => {},
+        querySelectorAll: () => [],
+        appendChild: () => {},
+    };
+    // Views reach for .parentElement to hide whole sections.
+    Object.defineProperty(el, "parentElement", {
+        get: () => node(id + "-parent"),
+    });
+    return el;
+}
+
+function makeDocument() {
+    const els = new Map();
+    return {
+        getElementById(id) {
+            // The debug banner is created on demand by helpers.js; absent
+            // is the state a non-debug, non-testnet popup is in.
+            if (id === "debug-banner") return null;
+            if (!els.has(id)) els.set(id, makeElement(id));
+            return els.get(id);
+        },
+        createElement: () => makeElement("created"),
+        addEventListener: () => {},
+        body: { prepend: () => {} },
+    };
+}
+
+function node(id) {
+    return globalThis.document.getElementById(id);
+}
+
+let logged;
+
+beforeEach(() => {
+    mockHistory = null;
+    logged = [];
+    jest.spyOn(console, "error").mockImplementation((...args) => {
+        logged.push(args.map(String).join(" "));
+    });
+    globalThis.document = makeDocument();
+    globalThis.window = { location: { search: "" } };
+    state.wallets = [
+        {
+            name: "Main",
+            type: "key",
+            addresses: [{ address: ADDRESS, balance: "0.0000" }],
+        },
+    ];
+    state.trackedTokens = [];
+    state.viewStack = [];
+    state.selectedWallet = 0;
+    state.selectedAddress = 0;
+    state.selectedToken = "ETH";
+});
+
+afterEach(() => {
+    jest.restoreAllMocks();
+});
+
+describe.each([
+    ["the address screen", addressDetail, "tx-list"],
+    ["the token screen", addressToken, "address-token-tx-list"],
+])("the transaction list on %s", (_name, view, listId) => {
+    // Open the screen and wait for its transaction list to load or fail.
+    async function open(pageClosed) {
+        view.init({ pageClosed });
+        view.show();
+        await new Promise((resolve) => setTimeout(resolve, 0));
+    }
+
+    test("a failure while the popup is open is reported", async () => {
+        await open(new AbortController().signal);
+        expect(logged).toEqual([
+            "[AutistMask] loadTransactions failed: Failed to fetch",
+        ]);
+        expect(node(listId).innerHTML).toContain(
+            "Failed to load transactions.",
+        );
+    });
+
+    test("a failure once the popup has closed is not", async () => {
+        const pageClosed = new AbortController();
+        pageClosed.abort();
+        await open(pageClosed.signal);
+        expect(logged).toEqual([]);
+    });
+
+    test("a name lookup that fails while the popup is open is reported", async () => {
+        mockHistory = [historyTx()];
+        await open(new AbortController().signal);
+        expect(logged).toContain(
+            "[AutistMask] ENS reverse lookup failed " +
+                RECIPIENT +
+                " Failed to fetch",
+        );
+        expect(node(listId).innerHTML).toContain("tx-row");
+    });
+
+    test("a name lookup that fails once the popup has closed is not", async () => {
+        mockHistory = [historyTx()];
+        const pageClosed = new AbortController();
+        pageClosed.abort();
+        await open(pageClosed.signal);
+        expect(logged).toEqual([]);
+        expect(node(listId).innerHTML).toContain("tx-row");
+    });
+});

tests/txStatus.test.js

@@ -21,7 +21,7 @@ jest.mock("../src/shared/log", () => ({
         debugf: () => {},
         infof: () => {},
         warnf: () => {},
-        errorf: () => {},
+        errorf: jest.fn(),
     },
     debugFetch: jest.fn(),
     setRuntimeDebug: () => {},
@@ -108,6 +108,7 @@ global.chrome = { storage };
 const txStatus = require("../src/popup/views/txStatus");
 const { state } = require("../src/shared/state");
 const { RESTORABLE_VIEWS } = require("../src/shared/restorableViews");
+const { log } = require("../src/shared/log");
 
 const TX_HASH =
     "0x85215772ed26ea8b39c2b3b18779030487efbe0b5fd7e882592b2f62b837be84";
@@ -128,16 +129,24 @@ function waitStatusText() {
     return getElement("wait-tx-status").textContent;
 }
 
+// Stands in for the popup's: aborting it is the popup closing.
+let pageClosed;
+
 beforeEach(() => {
     jest.useFakeTimers();
     jest.setSystemTime(new Date("2026-08-11T12:00:00Z"));
     elements.clear();
     mockReceiptLookup.mockReset();
+    log.errorf.mockClear();
     state.wallets = [];
     state.viewData = {};
     state.viewStack = [];
     state.currentView = null;
-    txStatus.init({ doRefreshAndRender: jest.fn() });
+    pageClosed = new AbortController();
+    txStatus.init({
+        doRefreshAndRender: jest.fn(),
+        pageClosed: pageClosed.signal,
+    });
 });
 
 afterEach(() => {
@@ -466,6 +475,30 @@ describe("WaitTx against an RPC that never answers", () => {
     });
 });
 
+// In the popup a lookup its own closing cancelled fails as a lookup against an
+// RPC that cannot be reached does, and is not reported
+// (https://git.eeqj.de/sneak/AutistMask/issues/475).
+describe("WaitTx when the popup closes", () => {
+    test("a lookup that fails while the popup is open is reported", async () => {
+        mockReceiptLookup.mockRejectedValue(new TypeError("Failed to fetch"));
+        txStatus.showWait(TX_INFO, TX_HASH);
+        await jest.advanceTimersByTimeAsync(10000);
+        expect(log.errorf).toHaveBeenCalledWith(
+            "poll receipt failed:",
+            "Failed to fetch",
+        );
+    });
+
+    test("a lookup that fails once the popup has closed is not", async () => {
+        mockReceiptLookup.mockRejectedValue(new TypeError("Failed to fetch"));
+        txStatus.showWait(TX_INFO, TX_HASH);
+        pageClosed.abort();
+        await jest.advanceTimersByTimeAsync(10000);
+        expect(mockReceiptLookup).toHaveBeenCalledTimes(1);
+        expect(log.errorf).not.toHaveBeenCalled();
+    });
+});
+
 describe("wait-tx is a view the popup may reopen onto", () => {
     // The resume feature is wired through RESTORABLE_VIEWS: restoreView()
     // refuses any view not in the set, so dropping "wait-tx" from it kills