Bug 1715825 R[Core:Audio/Video: Playback]Re-enable Updatebot; set it to once-per-release
Bug 1716046 R[Core:CSS Parsing and Computation]Test "left" and "right" as invalid values of align-* and place-* properties
Bug 1560396 R[Core:DOM: Editor]Get rid of `EditorBase::GetNodeAtRangeOffsetPoint()`
Bug 1709838 A[Core:DOM: Security]Enable HTTPS-First Mode in PBM Mode in Nightly
Bug 1715882 R[Core:DOM: Selection]Remove redundant return type from some Selection methods
Bug 1715844 R[Core:Gecko Profiler]undefined reference to `uprofiler_unregister_thread()'
Bug 1715902 R[Core:Graphics: WebRender]Refuse WebRender on Linux if GL context backed by software driver
Bug 1711648 N[Core:Graphics: WebRender]Transition from rectangles to min/max representation
Bug 1715982 R[Core:Internationalization]Incorrect initial capacity computation for NumberPartVector
Bug 1714141 N[Core:JavaScript Engine]Factor out internal thread pool from helper threads system
Bug 1699271 N[Core:JavaScript Engine: JIT][meta] Auto generate MIR, LIR, and WarpCacheIRTranspiler boilerplate
Bug 1713491 R[Core:Layout]Return std::pair from nsIFrame::GetOffsets
Bug 1681958 R[Core:Layout]Assertion failure: !IsFrameOfType(eReplaced) (aspect-ratio minimums should not apply to replaced elements), at /builds/worker/checkouts/gecko/layout/generic/nsIFrame.cpp:6323
Bug 1542807 N[Core:Layout]Remove legacy layout code path for ::marker (nsBulletFrame)
Bug 1715452 R[Core:Layout: Scrolling and Overflow][Mac]Firefox 89 makes my external screen to flicker while scrolling
Bug 1715684 R[Core:Networking]Block port 990 and others to prevent/reduce "ALPACA" attacks
Bug 1699837 N[Core:Printing: Output]Remote frames are zoomed in or out when printing to PDF
Bug 1715142 R[Core:Security: PSM]separate public key pinning implementation from HSTS implementation
Bug 1715954 R[DevTools:General]Check if devtools in-tree copy of acorn is still used
Bug 1715969 R[DevTools:General]macos jobs missing from try devtools preset
Bug 1715951 R[DevTools:Inspector]Remove testActor#waitForEventOnNode
Bug 1715741 R[DevTools:Inspector]Enable a few inspector tests which already work with bfcache in parent
Bug 1715949 R[DevTools:Inspector]Remove testActor#getWindowDimensions
Bug 1714384 N[Firefox:Bookmarks & History]Intermittent browser/components/places/tests/browser/browser_controller_onDrop.js | Test timed out -
Bug 1714349 R[Firefox:General]Remove browser.proton.modals.enabled pref
Bug 1702717 R[Firefox:Launcher Process]Crash in [@ mozilla::freestanding::patched_NtMapViewOfSection | BasepLoadLibraryAsDataFileInternal]
Bug 1713187 R[Firefox:Pocket]Fix side button reporting for Reader Mode
Bug 1715251 R[Firefox:Preferences]White bars on select fields in preferences UI
Bug 1709136 R[Firefox:Session Restore]Remove the explicit remoteness switch that happens during the restore process
Bug 1714688 R[Firefox Build System:General]Remove `if PY2`/`if PY3` logic now that we never use Python 2 with Mach
Bug 1715282 A[Firefox Build System:Toolchains]Bump minimum Rust version to 1.50
Bug 1543720 N[GeckoView:General]Enable the Storage Access API on GeckoView
Bug 1699794 R[GeckoView:General]Extend the GV Autocomplete API to support addresses
Bug 1682518 R[Toolkit:Crash Reporting]Make the WER runtime exception module inform the main browser about the minidumps it has generated
Bug 1697895 R[Toolkit:Crash Reporting]Register the WER runtime exception module at runtime in child processes
Bug 1703761 R[Toolkit:Crash Reporting]Flag crashes captured via WER so that they can be easily identified
Bug 1711418 R[Toolkit:Crash Reporting]Add the OOMAllocationSize field to crashes captured by WER
Bug 1710633 R[Toolkit:Notifications and Alerts]Clean up hardcoded 30px height increment for dialogs with titlebars (in the prefs)
Bug 1708455 R[Toolkit:Password Manager]Add support for multi-page login forms
Bug 1713912 R[Toolkit:Printing]Tests skipped in 'toolkit/components/printing/tests/browser.ini' for new Fission platform triage
Bug 1633883 R[Toolkit:Telemetry]`TelemetryTestUtils.assertScalar` will probably do the wrong thing if `value` is `0`
Bug 1682632 R[WebExtensions:General]Expose in extension background service workers WebExtensions API webidl bindings
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Changes to 47 bugs - 35 fixed.
1 bugs are not included due to being restricted