Bug 1683789 R[Core:Audio/Video: Playback]Spelling mistake in class name
Bug 1683788 R[Core:Audio/Video: Playback]Add telemetry probe for knowing more details about audio competition
Bug 1674315 R[Core:Audio/Video: Playback]Excessive console errors when playing any media
Bug 1682882 V[Core:CSS Parsing and Computation]Hit MOZ_CRASH(Invoking Servo_Element_IsDisplayContents on unstyled element) at servo/ports/geckolib/glue.rs:1468
Bug 1683295 R[Core:CSS Parsing and Computation]make next_in_preorder generate slightly better code.
Bug 1682988 R[Core:DOM: CSS Object Model]Use UTF8String for querySelector{,All}, .matches, and other selectorlist-taking things.
Bug 1683226 A[Core:DOM: UI Events & Focus Handling]Get rid of plugin support of IME/keyboard handling
Bug 1684095 R[Core:GFX: Color Management]More safety in profile writing.
Bug 1683966 R[Core:Graphics: WebRender]Add autoreleasepools for more of WebRender
Bug 1683936 V[Core:Graphics: WebRender][Bug] all sites are blank since 84.1.1 on Adreno 510
Bug 1683608 R[Core:JavaScript Engine]Assertion failure: IsGCThingValidAfterMovingGC(t), at gc/Marking-inl.h:148 or crashes with shell-only functions
Bug 1684096 R[Core:JavaScript Engine: JIT]Clean up JSOp spew for CacheIR health report
Bug 1683424 R[Core:Layout]The aspect ratio used in ComputeSizeWithIntrinsicDimensions() should consider box-sizing if it is from aspect-ratio property
Bug 1684093 R[Core:Printing: Output]print margin guides are drawn with the sides switched
Bug 1684061 A[Core:Security: PSM]Upgrade Firefox 86 to use NSS 3.61
Bug 1679735 R[Core:WebRTC: Audio/Video]Require recent user gesture for getDisplayMedia()
Bug 1683412 R[Firefox:Messaging System]Enhance SHOW_MIGRATION_WIZARD handler inside SpecialMessageActions to accept "source" param
Bug 1656336 R[GeckoView:Extensions][1538348 subtask 2] Implement downloads() function
Bug 1681985 N[Toolkit:Form Autofill]Use Fathom to recognize CC fields
Bug 1678606 R[Toolkit:Places]Convert onClearHistory to a new history-cleared PlacesEvent
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Changes to 21 bugs - 16 fixed.