Bug 1618678 R[Core:CSS Parsing and Computation]geckoservo::glue::traverse_subtree was slower in Fenix compare to Fennec
Bug 1627383 R[Core:DOM: Core & HTML]Simplify a condition in NewXULOrHTMLElement.
Bug 1608556 R[Core:Gecko Profiler]Expose to privileged JS an API to add markers with a start time and an associated text
Bug 1627482 R[Core:Graphics]Make gfx/* buildable outside of a unified build environment
Bug 1627480 R[Core:Graphics]Make gfx/2d buildable outside of a unified build environment
Bug 1626659 R[Core:Graphics: Layers]Make gfx/layers buildable outside of unified build environment
Bug 1626611 R[Core:Internationalization]Perma [Late Beta] /encoding/encodeInto.any.serviceworker.html | Unhandled rejection: ServiceWorker script at https://web-platform.test:8443/encoding/encodeInto.any.worker.js for scope https://... - when Gecko 76 merges to Beta on 2020-04-06
Bug 1626893 R[Core:JavaScript Engine: JIT]WarpBuilder: fix remaining jit-tests
Bug 1627174 R[Core:JavaScript Engine: JIT]WarpBuilder: Add a Treeherder job for WarpBuilder jit-tests
Bug 1623820 R[Core:Layout: Images, Video, and HTML Frames]make image-orientation initial value be from-image in Nightly only
Bug 1625452 R[Core:mozglue]The target.cppunittest.tests fails to hook QueryDosDeviceW from kernelbase.dll for TestDllInterceptor.exe
Bug 1621012 R[DevTools:Console]Console - Expression error expand is stutter-y
Bug 1625583 R[DevTools:Debugger]Intermittent devtools/client/debugger/test/mochitest/browser_dbg-blackbox-all.js | Test timed out -
Bug 1626462 R[Firefox:Installer]Remove pdf.js images from allowed-dupes.mn
Bug 1599985 R[Firefox:Security]about:certificate viewer does not look up and show the cert chain when viewing a single cert
Bug 1627439 R[Firefox Build System:Generated Documentation]Remove an old reference to doxygen
Bug 1623406 R[Toolkit:Startup and Profile System]Extend the expiry of the startup.profile_selection_reason telemetry probe
Bug 1621948 R[Toolkit:Startup and Profile System]Re-enable (and fix?) the NUMBER_OF_PROFILES probe
Bug 1627036 A[Toolkit:Themes]Convert all relevant uses of left/right to logical properties in toolkit/
Bug 1624657 A[Toolkit:XUL Widgets]Reduce overhead from Custom Element constructors for elements inside HTML template nodes
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Changes to 20 bugs - 17 fixed.