Bug 158968 R[Firefox:General]command line option for kiosk mode
Bug 1232403 A[Firefox Build System:General]|mach doc| is broken on Windows
Bug 1398738 R[Core:JavaScript Engine]Discard code coverage counters when Baseline is GC-ed
Bug 1439390 R[DevTools:Netmonitor]"Edit and Resend" DevTools function broken by CSP enforcement
Bug 1456995 N[Core:DOM: Service Workers]enable e10s service workers pref on nightly
Bug 1512175 R[Core:Audio/Video: Recording]MediaRecorder.mimeType returns empty string
Bug 1514158 R[Core:Audio/Video: Recording]Implement MediaRecorder's audioBitsPerSecond and videoBitsPerSecond attributes
Bug 1539212 R[Core:Layout]implement readability backplate for high contrast mode
Bug 1546074 N[Core:Javascript: WebAssembly]WasmTextToBinary: Do not require 'passive'; do require a type for passive element segments
Bug 1547961 R[Remote Protocol:Agent]Intermittent remote/test/browser/browser_runtime_executionContext.js | Test timed out -
Bug 1550108 R[Toolkit:Startup and Profile System]Reduce time spent decompressing StartupCache entries
Bug 1559011 R[Core:WebRTC: Audio/Video]Capturing some windows via getDisplayMedia doesn't work properly on Windows
Bug 1572006 N[Core:JavaScript: GC]Replace use of JSRuntime with GCRuntime where possible inside the GC component
Bug 1572717 R[Firefox:Toolbars and Customization]Add spacing after the bookmark icon in the bookmark toolbar when in Customize mode
Bug 1576254 R[Core:Javascript: WebAssembly]Allow enabling WASM on Chrome content (including Extensions) but disabling it on web content
Bug 1577003 R[GeckoView:General]Avoid `ViewStructure` in `GeckoSession` autofill methods
Bug 1577508 R[Core:Javascript: WebAssembly]Allow WebAssembly blocks to return multiple values
Bug 1578907 R[Core:Widget: Cocoa][10.15] MacOS 10.15 Beta - Flash File Picker broken
Bug 1580356 R[Firefox Build System:Android Studio and Gradle Integration]Remove Fennec build system support and source code
Bug 1580469 R[DevTools:Performance Tools (Profiler/Timeline)]Add mochitests for capturing a profile with the popup
Bug 1581975 R[DevTools:Performance Tools (Profiler/Timeline)]Fix getSymbolTable code for popup to be consistent
Bug 1582407 R[Core:Audio/Video: Recording]MediaRecorder-pause-resume.html fails
Bug 1582408 R[Core:Audio/Video: Recording]MediaRecorder's WPT idlharness.window.js is not spec compliant
Bug 1583244 R[Core:Gecko Profiler]Provide unfuzzed timings for UserTiming markers
Bug 1583479 R[Firefox:New Tab Page]Updates of the home page blocklist whilst Firefox is running have incorrect case-insensitive comparisons
Bug 1583487 R[Core:JavaScript Engine: JIT]Remove Baseline's WarmUpCount IC
Bug 1583945 R[DevTools:Responsive Design Mode]Import the RDM browser stylesheet along with the devtools-browser stylesheet
Bug 1583953 R[Core:MFBT]mozilla::Span iterators not optimized out in operator==
Bug 1584293 R[Firefox:Firefox Accounts]New UI for disconnect sync confirmation dialog
Bug 1584718 R[Core:Layout: Text and Fonts]Codepoint U+FE0F (Variation Selector-16) affecting the width of adjacent space characters
Bug 1584780 R[Firefox:Messaging System]layout.css.xul-box-display-values.survive-blockification.enabled breaks CFR panels
Bug 1585351 R[Firefox Build System:General: Unsupported Platforms]Investigate Bug 1460357 and see if it can be backed out
Bug 1585353 R[Firefox Build System:General: Unsupported Platforms]Investigate Bug 1440013 and see if it can be backed out
Bug 1585355 R[Firefox Build System:General: Unsupported Platforms]Investigate Bug 1443823 and see if it can be backed out
Bug 1585367 R[Firefox:Distributions][Win][Acer] The code in the search is wrongly displayed after Firefox update
Bug 1585398 R[Toolkit:Password Manager]Multiple generated passwords in the same session / principal after password merge
Bug 1585507 R[Firefox:Sync]Replace mobile download links with "Connect another device" link
Bug 1585529 R[DevTools:Console]Fix invoke getter button for properties with quotes
Bug 1585727 N[Core:DOM: Core & HTML]Enable browser_preferences_usage.js on Fission
Bug 1585734 R[Firefox Build System:Lint and Formatting]Unable to match regex against output: ModuleNotFoundError: No module named 'codespell_lib'
Bug 1585747 A[DevTools:General]Remove devtools.toolbox.content-frame preference and related workaround
Bug 1585828 R[Firefox Build System:Mach Core]"mach run" broken for Thunderbird
Bug 1585845 R[Core:Graphics]member access within address <addr> with insufficient space for an object of type 'tt_segment_map_t' in gfx/cairo/cairo/src/cairo-truetype-subset.c:1194
Bug 1585874 R[Core:JavaScript Engine]Intermittent Android PROCESS-CRASH | Mochitest | application crashed [@ <name omitted>]
Bug 1586010 R[Firefox Build System:General][mozversioncontrol] errors running on Windows with Python 3
Bug 1586043 R[Core:Audio/Video: Playback]MOZ_CRASH in MediaKeySystemAccessManager::Request if closing tab/window at wrong time
Bug 1586075 R[Firefox:Sync]Add post-reset state avatar for account
Bug 1586093 R[Firefox:New Tab Page][Export] Add engagement pref, join variant and bug fixes to New Tab Page
Bug 1586119 R[Core:Document Navigation]Fix some arbitrary mochitests which fail under Fission
Bug 1586136 R[Firefox:Toolbars and Customization]Figure out why browser_customization_context_menus.js crashes with fission enabled
Bug 1586140 A[Core:CSS Parsing and Computation]trim ServoBindings.toml
Bug 1586165 R[Core:JavaScript Engine]member call on null pointer of type 'js::jit::IonScriptCounts' in js/src/vm/JSScript.cpp:1504
Bug 1586188 R[Web Compatibility:Interventions]Import WebCompat GoFaster 6.2.0 sources
Bug 1586205 R[Firefox for Android:General]The welcome panel card appears twice in the onboarding process
Bug 1586228 R[Toolkit:Downloads API]Attempting to download files through Firefox immediately fails.
Bug 1586232 R[Firefox:Address Bar]Animate the megabar with transforms only
Bug 1586246 R[Firefox:General]Migrate autohide-context to Fluent using convert script
Bug 1586272 R[Core:XPConnect]Enable dom/base/test/test_shared_compartment2.html for Fission
Bug 1586287 R[Firefox:Address Bar]Reduce the megabar horizontal padding from 55px to 30px
Bug 1586336 R[Toolkit:XUL Widgets]Update textbox tests in layout/ to use input
Bug 1586337 R[Toolkit:XUL Widgets]Update textbox tests in editor/ to use input
Bug 1586357 R[Firefox Build System:General]Only force re-linking on 1-tier PGO builds
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Changes to 63 bugs - 56 fixed.
3 bugs are not included due to being restricted