Bug 1684320 R[Core:Audio/Video: cubeb]The microphone is not working or is heard at a very low level, almost inaudible
Bug 1454294 R[Core:CSS Parsing and Computation]Rename {Longhand,Shorthand}.alias to aliases in servo/components/style/properties/data.py
Bug 1689327 R[Core:CSS Parsing and Computation]Themed resizer incorrectly being used for unthemed elements.
Bug 1693835 R[Core:CSS Parsing and Computation]Use a base class for Longhand and Shorthand in servo/components/style/properties/data.py
Bug 1693378 R[Core:Canvas: WebGL]webgl manifest adjustments for osx 10.15 and 11.0
Bug 1693831 R[Core:DOM: Bindings (WebIDL)]Unused forward declaration of Prefable in DOMJSProxyHandler.h
Bug 1676943 R[Core:DOM: Content Processes]To measure the impact of content crashes on users, record telemetry on how often we show a crash reporter
Bug 1664485 R[Core:DOM: Security][sanitizer] interop with current, simple tests in wpt
Bug 1689992 R[Core:DOM: Serializers]MacOS: can't copy SVG image from clipboard to "Pages" application
Bug 1693663 R[Core:DOM: Service Workers]Add dark mode support for about:serviceworkers
Bug 1693683 R[Core:DOM: UI Events & Focus Handling]Cannot drag tabs, toolbar, and web content with pen, on macOS
Bug 1693607 R[Core:Disability Access APIs][Linux] Add braces around statements
Bug 1693597 R[Core:Disability Access APIs]Rename Accessible to LocalAccessible and ProxyAccessible to RemoteAccessible
Bug 1693483 R[Core:JavaScript Engine]Move TypedObject TypeDescr from ObjectGroup to the object itself
Bug 1685999 R[Core:Javascript: WebAssembly]Implement the SIMD "lane load and lane store" instruction
Bug 1693409 R[Core:Layout: Flexbox]Firefox-only WPT failures in table-as-item-narrow-content.html
Bug 1693764 R[Core:Layout: Form Controls]Perma layout/reftests/forms/input/radio/radio-clamp-01.html and checkbox-clamp-01.html when Gecko 87 merges to Beta on 2021-02-22
Bug 1692607 R[Core:Layout: Tables]Empty columns doesn't apply CSS border-spacing (cellspacing)
Bug 1693738 R[Core:Networking: HTTP]Extend HTTP3_CONNECTION_CLOSE_CODE telemetry
Bug 1264117 R[Core:Networking: HTTP]Long IFrame "src" attributes cause crash
Bug 1687264 R[Core:Networking: HTTP]Crash in [@ mozilla::net::HttpBackgroundChannelChild::Init]
Bug 1693708 R[Core:Networking: JAR]Narrow down the zero_byte_load probe to tailor results for YSOD
Bug 1640186 R[Core:Panning and Zooming]Add some sendNativePinch machinery for testing purposes
Bug 1692997 A[Core:Panning and Zooming]make scrollbar button click + hold (repeat mode) go through apz
Bug 1693639 R[Core:Sanitizers]Tsan needs to run web-platform tests sequentially
Bug 1688685 A[Core:Security: PSM]Upgrade Firefox 87 to use NSS 3.62
Bug 1693741 R[Core:Storage: Quota Manager]Retry renaming of origin directories during the storage upgrade 0_0To1_0 and 1_0To2_0
Bug 1693737 R[Core:Storage: Quota Manager]Add CallWithDelayedRetriesIfAccessDenied helper method
Bug 1692385 R[Core:WebRTC: Audio/Video]GetSinkDevice() leaks SourceListeners until the window is navigated
Bug 1693688 R[Core:Widget: Cocoa]radiosize.xhtml and checkboxsize.xhtml reftests fail on macOS with non-native theme enabled
Bug 1693690 R[Core:Widget: Cocoa]nostretch.xhtml reftest fails on macOS with non-native theme enabled
Bug 1644018 R[Core:Widget: Gtk][wayland] Contents of folders in Bookmarks Toolbar which require scrolling don't appear
Bug 1693814 R[Core:XPCOM]Re-enable ArenaAllocator tests in ccov builds since they are no longer failing
Bug 1691590 R[DevTools:Framework]Fix and re-enable devtools/shared/resources/tests/browser_resources_stylesheets.js test for Fission
Bug 1691392 R[DevTools:Inspector]Intermittent browser_inspector_highlighter-eyedropper-frames.js, browser_inspector_highlighter-eyedropper-zoom.js | The eyedropper holds the expected color for the top-level element - Got "", expected "#ff0000"
Bug 1693694 R[DevTools:Inspector: Compatibility]Update MDN compat data (2021 Feb 3rd week)
Bug 1692630 R[Firefox:Menus]Apply more Proton stylings for AppMenu headers and subheaders
Bug 1692603 R[Firefox:Menus]Update Proton AppMenu Zoom controls styling
Bug 1686343 R[Firefox:Messaging System]Ask user to pin Firefox during windows about:welcome onboarding
Bug 1692382 R[Firefox:Messaging System]update npm dependencies for Fx 87 nightly and refile this bug for Fx 88
Bug 1692230 R[Firefox:Nimbus Desktop Client]Move ExperimentAPI/Nimbus into its own directory in toolkit
Bug 1693402 R[Firefox:Normandy Client]Add telemetry to determine source of unenrollFailed reason=already-unenrolled
Bug 1667973 R[Firefox:PDF Viewer]Add a sandbox for evaluating js scripts embedded in PDFs
Bug 1693855 R[Firefox:PDF Viewer]Update pdf.js to version 2.8.117
Bug 1693714 R[Firefox:Tabbed Browser]Background tabs jump when dragging within the tab strip instead of a smooth animation
Bug 1693710 R[Firefox:Theme]Suppress notch on arrow panels when Proton is enabled
Bug 1692214 R[Firefox:Toolbars and Customization]Hide the Library button by default
Bug 1693140 R[Firefox Build System:Generated Documentation]Mermaid is broken after upgrading to Sphinx 3.5.1 and mermaid to 0.6.0
Bug 1581971 R[Firefox Build System:Mach Core]Teach `mach run` about `--debug` and friends for `mobile/android`
Bug 1689126 R[Toolkit:Crash Reporting]Do not show Fission subframe crash reporter if the subframe crash event has no report payload
Bug 1442053 R[Toolkit:Crash Reporting]Use regular C++ strings in the exception handler instead of C ones
Bug 1693878 R[Toolkit:Password Manager]Add "websites-with-shared-credential-backends" data in tree
Bug 1692220 R[Toolkit:Startup and Profile System]New long-ish delay between first paint and presenting initial about:home due to content-process sandbox blocking font access
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Changes to 53 bugs - 50 fixed.
4 bugs are not included due to being restricted