Bug 1699509 R[Core:Audio/Video: Playback]Re-enable test_playback.html on linux + mac builds that have it disabled, but don't test ambisonics.mp4
Bug 1699088 N[Core:CSS Parsing and Computation]Cache fonts / floats / ints in nsXPLookAndFeel.
Bug 1647845 N[Core:CSS Parsing and Computation]Geckolib/glue changes to support @page rule size attribute
Bug 1697089 R[Core:DOM: Core & HTML]Web Manifest: Remove query & fragment components from scope URL
Bug 1699402 R[Core:DOM: Core & HTML]Minor cleanup in HTMLDialogElement focusing steps.
Bug 1692308 R[Core:DOM: Core & HTML]Merge sGCTimer and sGCInterSliceRunner into a single sGCRunner
Bug 1675820 R[Core:DOM: Navigation]Crash in [@ IPCError-browser | RecvCreateBrowsingContext Parent has different group object]
Bug 1697927 R[Core:DOM: Navigation]Minor BrowsingContext cleanups
Bug 1698768 R[Core:DOM: Security]Bundle sec-fetch-* tests within dom/security/tests/sec-fetch/
Bug 1699570 R[Core:DOM: UI Events & Focus Handling]Consider making focus not follow mouse in chrome UI
Bug 1699154 R[Core:DOM: UI Events & Focus Handling]:focus-visible - JS-based focus() on back nav treated as keyboard input
Bug 1697670 R[Core:Graphics]YUVColorSpace::UNKNOWN should be Maybe<YUVColorSpace>
Bug 1684194 R[Core:Graphics: WebRender]Use RenderCompositorEGL on X11/EGL
Bug 1695500 A[Core:Graphics: WebRender]Implement Wayland support for example compositor
Bug 1507074 R[Core:Graphics: WebRender]Shader compilation failed when GL_OES_EGL_image_external_essl3 is not supported on android device
Bug 1563624 R[Core:IPC]Reject async IPC promises if `Resolver` argument is dropped
Bug 1699098 R[Core:IPC]Generated RemoveManagee code unnecessarily does double hashtable lookups
Bug 1699100 R[Core:IPC]Remove unused code-emitting functions from lower.py
Bug 1697846 R[Core:JavaScript Engine: JIT]Arm64 simulator misexecutes fcvtn
Bug 1699398 R[Core:Javascript: WebAssembly]Fix build failures resulting in "use of undeclared identifier 'forceWasmIon'" in obscure build configurations
Bug 1693482 A[Core:Javascript: WebAssembly]SIMD optimization x64/x86: inline constant load in various instructions
Bug 1698127 R[Core:Javascript: WebAssembly]Fix clang static-analysis and formatting issues
Bug 1699379 R[Core:Javascript: WebAssembly]Disable asm.js (but not wasm) compilation via Ion on arm64, for the time being
Bug 1693368 R[Core:Javascript: WebAssembly]Implement SIMD i64x2.abs instruction
Bug 1696113 R[Core:Layout]Intermittent flexbox/flexbox-resizeviewport-1.xhtml == flexbox/flexbox-resizeviewport-1-ref.xhtml | image comparison, max difference: 1, number of differing pixels: 14
Bug 1698235 R[Core:Layout]crash near null in [@ nsPagePrintTimer::WaitForRemotePrint]
Bug 1686866 N[Core:Layout]Intermittent /css/css-sizing/box-sizing-replaced-001.xht | Testing http://web-platform.test:8000/css/css-sizing/box-sizing-replaced-001.xht == http://web-platform.test:8000/css/css-sizing/box-sizing-replaced-001-ref.xht
Bug 1698266 R[Core:Layout: Form Controls]Perma macOS forms/input/datetime/time-content-left-aligned.html == forms/input/datetime/time-content-left-aligned-ref.html | image comparison, max difference: 6, number of differing pixels: 48 when Gecko 88 merges to Beta on 2021-03-22
Bug 1698353 R[Core:Layout: Scrolling and Overflow][fission] Some content gets clipped when navigating in an iframe, with e.g. Yahoo Mail and w3.org, with fission enabled
Bug 1697666 R[Core:Layout: Text and Fonts]non-Japanese font is used for monospace, on Japanese website
Bug 1667977 R[Core:Layout: Text and Fonts]Crash in [@ mozilla::fontlist::Family::SearchAllFontsForChar]
Bug 1699024 R[Core:Networking: HTTP]Uninitialized value usage in nsHttpTransaction.cpp. mConnection->BytesWritten() is bogus.
Bug 1697480 R[Core:Networking: HTTP]Collect more telemetry for the performance impact of HTTPS RR
Bug 1698643 R[Core:Performance]Implement a telemetry probe to collect the input latency from mouseup(followed by a click) to the next composition
Bug 1694020 R[Core:Security: PSM]Upgrade Firefox 88 to use NSS 3.63
Bug 1698786 N[Core:Spelling checker]Extend logging around `mozInlineSpellChecker`
Bug 1500116 R[Core:Storage: IndexedDB]Assertion failure: !mPendingRequestCount, at /builds/worker/workspace/build/src/dom/indexedDB/IDBTransaction.cpp:102
Bug 1699354 R[Core:Web Painting]s/GetCrossDocParentFrame/GetCrossDocParentFrameInProcess/ in FrameLayerBuilder.cpp
Bug 1698783 R[Core:Widget]Firefox Nightly 88.0a1 (2021-03-16) stopped respecting system scrollbar width
Bug 1699551 R[Core:Widget: Cocoa]Preparations for initial native context menu support
Bug 1691553 R[Core:Widget: Cocoa]Fluent labels for dynamically created menuitems are not displayed
Bug 1699506 R[Core:Widget: Cocoa]Add fullscreen toolbar-shifting behavior behind a pref
Bug 1698518 R[Data Platform and Tools:Glean: SDK]Record events in child processes and replay them over IPC
Bug 1698491 R[DevTools:Debugger]Wait for resume(dbg) resolution in all debugger tests
Bug 1699432 R[DevTools:Framework]Prepare for destroying the target fronts via target-destroyed-form instead of tabDetached
Bug 1698842 R[DevTools:Framework]Prevent TargetCommand from notifying about new target that are already destroyed
Bug 1697747 R[DevTools:Inspector]Ignore already destroyed root node resources in onResourceAvailable callback
Bug 1693147 R[DevTools:Netmonitor]Use toggle button for switching between raw and formatted request view
Bug 1696479 R[Firefox:Address Bar]Tweak chiclet and urlbar-label-box colors in dark mode
Bug 1697910 N[Firefox:Menus][Proton] The app menu and doorhangers should have rounded corners
Bug 1699427 R[Firefox:Menus]Update context menu styling to lose the big shadow
Bug 1695792 R[Firefox:Menus]New copy for Firefox accounts menu error notifications
Bug 1699134 V[Firefox:Menus][Proton] Submenu icons for disabled options is not greyed out
Bug 1698979 R[Firefox:Messaging System]Restyle WebRTC window/screen sharing permission panel when Proton is enabled
Bug 1694578 R[Firefox:Messaging System]0.09 - 0.18% installer size (osx-shippable) regression on push af7e4b09a4fb8d72b7945ece38b87a31e9b1c85c (Fri February 19 2021)
Bug 1699313 R[Firefox:PDF Viewer]Update pdf.js to version 2.8.243
Bug 1698847 R[Firefox:Search]Move search related telemetry documentation from address bar to search docs and correct it
Bug 1698817 R[Firefox:Site Permissions][Cisco Webex] Microphone permission is leaked to other sites in the same tab during the grace period
Bug 1698223 R[Firefox:Theme]Rename '--proton-shadow-blur-radius' variable
Bug 1699499 R[Firefox:Theme]Increase proton touch mode toolbar height
Bug 1698032 R[Firefox:Theme]New Proton Tabs Bar design does not blend well with the Windows 7 specific glassy window
Bug 1697624 N[Firefox:Theme]Apply additional Proton styles to various PopupNotification panels
Bug 1696889 R[Firefox:Theme]Elements before Zoom Controls are moving when selected zoom level is changed
Bug 1699360 R[Firefox:Theme]Background of the back button on light theme is darker than it was
Bug 1696546 R[Firefox:Theme][Proton] A dark line is shown at the top of the selected tab when the menubar is visible
Bug 1696221 R[Firefox:Toolbars and Customization]Update bookmark button border radius
Bug 1698812 R[Firefox:about:logins]Replace BrowserTestUtils.waitForCondition with TestUtils.waitForCondition in browser_deleteLogin.js
Bug 1695285 R[Firefox Build System:General]Pass asan/ubsan compiler flags through to cargo for C code built by cargo
Bug 1699483 R[Firefox Build System:Task Configuration]drop unused task group labels
Bug 1696540 R[Firefox Build System:Task Configuration]Run browsertime against Python 3 in CI
Bug 1698823 R[GeckoView:Extensions]java.lang.NullPointerException: WebExtension$DelegateController.getActionDelegate()
Bug 1685486 R[GeckoView:General]SessionState.fromString() throws JSONException (typeMismatch)
Bug 1698670 A[Release Engineering:Release Automation: Updates]corrupt complete mar: _lzma.LZMAError: Corrupt input data
Bug 1694506 R[Remote Protocol:Agent]Sync vendored puppeteer to v8.0.0
Bug 1697788 R[Toolkit:General]Move pop-up infobar from warning to informational
Bug 1678567 R[Toolkit:Telemetry]Implement testGetValue for events
Bug 1698826 R[Toolkit:Telemetry]Perma [tier2] 0:05.38 toolkit/components/glean/pytest/test_no_expired_metrics.py::test_no_metrics_expired TEST-UNEXPECTED-FAIL
Bug 1699594 R[Toolkit:Themes]Remove useless per-platform info-pages.css stylesheets
Bug 1699072 R[Toolkit:Themes]Remove toolkit/themes/shared/profile/information.svg
Bug 1699576 R[Toolkit:Themes]Move toolkit/themes/shared/plugins/ icons to toolkit/themes/shared/icons/
Bug 1698355 R[Toolkit:Themes]Replace --in-content-border-active and --in-content-border-active-shadow
###########
Changes to 86 bugs - 75 fixed.
2 bugs are not included due to being restricted