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Friends of the Firefox team

Resolved bugs (excluding employees)

Volunteers that fixed more than one bug

  • Claudia Batista [:claubatista]
  • Oriol Brufau [:Oriol]
  • Shane Hughes [:aminomancer]

New contributors (🌟 = first patch)

General triage

Project Updates

Add-ons / Web Extensions

Addon Manager & about:addons
  • Upcoming changes to the add-on install flow:

    • InstallTrigger is entering into a deprecation path in Firefox 100 - Bug 1754441

    • Introduced some additional cross-origins checks to the add-on installation flows triggered from webpages (both originated by InstallTrigger calls and/or navigations to an XPI url) - Bug 1755950

    • In addition (not landed yet, but should land soon) we also plan to introduce in Firefox >= 100 user activation requirement to successfully trigger the add-on installation flows - Bug 1759737

  • SitePermission add-on type (SitePermission doc page from

    • Allow SitePermission add-ons to be installed from subdomains (along with disallowing the install origin associated to the SitePermission addon xpi file from being set to known eTLD) - Bug 1759764

WebExtensions Framework
WebExtension APIs

Developer Tools

  • WebDriver BiDi - bidirectional protocol for browser automation designed to make cross-browser testing easier. It’s based on a spec.
  • Browser Toolbox - The Browser Toolbox enables you to debug add-ons and the browser's own JavaScript code rather than just web pages like the normal Toolbox. The Browser Toolbox's context is the whole browser rather than just a single page on a single tab.
    • Seeking feedback that would help us to understand what features/bugs/workflows are important for its users (mostly folks working on Firefox UI/Add-ons) and prioritize.

Downloads Panel

Form Autofill

Desktop Integrations (Installer & Updater)

  • Thanks to :bhearsum: Landed a good portion of private browsing mode entry point. Aiming for fx-101. Currently pref’d off.
  • Closed bug with background task leaving parts of profile on disk - Kudos to :nrishel:

Password Manager


Performance Tools (aka Firefox Profiler)

  • Move instant markers to the top line in the marker chart panel. (#3927)
  • Capture IPC markers from the unprofiled threads. They will show up in the main thread of their process. (Bug 1709104 and Bug 1755965)
  • Add thread information to the IPC markers that are coming from other threads. (Bug 1758099)
  • Implement a Fluent function to transform dates in the list of published profiles (#3928)

See that the date formats change depending on the locale now

  • Expose frame labels that are interesting to the JS view like “Paint”, “Styles” and GC/CC operations (Bug 1752861)
  • Add SetAnimation, SampleAnimation and ClearAnimation markers on the compositor thread and add more information to the existing animation markers. (Bug 1757202)
  • Reminder: Joy Of Profiling [matrix channel] and meetings (every monday): come and share your profiles!

Search and Navigation

This week I learned