The one entry in ALLOWED_ERRORS in tests/e2e/firefox/run.js, Firefox reporting a popup promise that settled after the page unloaded, lost its cause when the site-connection buttons stopped sending with an unawaited sendMessage before closing (#275). Left in place it would also hide the same error from any other popup code that sends and then closes. The entry goes, with the code that only printed and set aside tolerated errors, and the README paragraph that described it. Model: opus-5-5