Bug 1639409 R[Core:Audio/Video: Playback]AVIF (AV1 Image File Format): decode with dav1d
Bug 1538805 R[Core:DOM: Device Interfaces]Gamepad only can be shown up in a single tab when visiting to multiple Gamepad tabs.
Bug 1602757 A[Core:DOM: Navigation]Fission content processes aren't prestarted
Bug 1557386 R[Core:DOM: Security]Beacon should not be restricted by CORS
Bug 1639057 R[Core:DOM: UI Events & Focus Handling]Intermittent dom/events/test/test_bug426082.html | Test timed out.
Bug 1640401 R[Core:Graphics: WebRender]Some custom styles cause the browser window to white flashes
Bug 1639563 R[Core:Graphics: WebRender]Sanitize fonts before we use them
Bug 1639837 R[Core:IPC]make CloseFileRunnable use mozilla::Runnable
Bug 1636691 R[Core:JavaScript Engine]Improve stack information for promises due to exception in then/catch handlers
Bug 1639547 R[Core:JavaScript: Internationalization API]Perma SM(cgc) line Assertion failure: source->hasUncompressedSource(), at /builds/worker/workspace/build/src/js/src/vm/JSScript.cpp:2625 even for successful tasks
Bug 1639637 R[Core:MFBT]Add Maybe method to move out contents leaving Nothing() behind
Bug 1637802 R[Core:Performance]Add markers for script compilation and execution
Bug 1603168 R[Core:Storage: Cache API]Make Cache.match() and Cache.matchAll() throw when a response fails the appropriate CORP check for its COEP global
Bug 1636071 R[Core:Web Painting]nsIFrame::GetTransformMatrix should also stop at out of flow frames when passed the STOP_AT_STACKING_CONTEXT_AND_DISPLAY_PORT flag
Bug 1612063 A[Core:WebRTC: Signaling]test_peerConnection_relayOnly.html fails on android-hw
Bug 1156934 R[Core:Widget]Be more efficient with how we update the LookAndFeel int cache in the content process
Bug 1627507 R[Core:Widget: Gtk]Right click sometimes adds a bookmark instead of opening the context menu (Elementary OS)
Bug 1639575 R[Core:Widget: Gtk][Wayland/Sway] File chooser dialog doesn't show up anymore
Bug 1640087 N[Core:Widget: Win32]Create experiment for read ahead DLL prefetches
Bug 1640099 R[DevTools:Netmonitor]Make sure blocking reasons is always set
Bug 1636583 R[Firefox:Address Bar]Allow forcing a visit by appending a slash to uri-like search strings
Bug 1639606 R[Firefox:File Handling]Opening PDF in system default always opens in new tab
Bug 1611645 R[Firefox:General]"Mozilla Firefox (Private Browsing)" tooltip appears when hovering over browser chrome in private windows, for example over urlbar search suggestions
Bug 1619694 R[Firefox:Messaging System]Send Impression ping when respective screen is visible for multistage aboutwelcome.jsx
Bug 1640142 R[Firefox Build System:Lint and Formatting]Missing spaces in "mach clang-format" help message
Bug 1636994 R[Toolkit:Add-ons Manager]allow in private browsing panel does not work in perma-private browsing
Bug 1636846 R[Toolkit:Video/Audio Controls]picture-in-picture doesn't open in full-screen mode
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Changes to 28 bugs - 24 fixed.
1 bugs are not included due to being restricted