Flutter 3.15 beta (September 15, 2023)

The release of the Flutter 3.15 beta contains the changes noted below.

To try out the newest beta run:

flutter channel beta
flutter upgrade

Flutter 3.15 beta (September 15, 2023)

Flutter

Framework

• Handle breaking changes in leak_tracker. by @polina-c in #131998
• More documentation about warm-up frames by @Hixie in #132085
• Remove Iterator from _History by @justinmc in #132101
• [framework] Add Search Web to selection controls for iOS by @LouiseHsu in #131898
• Paginated Data Table : Fixed Row number at footer in last page by @aakash-pamnani in #130389
• Fix TabBarTheme.indicatorColor not applied in Material 2 by @TahaTesser in #132123
• Document that missed_frame_build_budget_count is misleading by @Hixie in #132137
• More PageStorage clarity in the documentation by @Hixie in #131954
• Add PopupMenuButton.iconColor, PopupMenuTheme.iconSize and fix button icon using unexpected color propert by @TahaTesser in #132054
• Revert of #120385 by @Jasguerrero in #132167
• Add textCapitalization property for SearchBar and SearchAnchor by @QuncCccccc in #131459
• Add more info to OverlayState.insert error messages by @LongCatIsLooong in #129363
• Use pattern matching to avoid strange type annotations by @LongCatIsLooong in #131964
• Revert "Handle breaking changes in leak_tracker." by @zanderso in #132223
• Reland "[web] Migrate framework to fully use package:web (#128901)" by @mdebbar in #132092
• Add an example for TapAndPanGestureRecognizer by @Renzo-Olivares in #131873
• Handle hasStrings on web by @justinmc in #132093
• Deprecate describeEnum. by @bernaferrari in #125016
• Remove shrinkWrap from flexible_space_bar_test.dart by @thkim1011 in #132173
• Sample code for ImageProvider by @Hixie in #131952
• Making TextPainter rounding hack disabled by default by @LongCatIsLooong in #132094
• Fix prefer_null_aware_operators violation by @srawlins in #132242
• Add missing ignore: deprecated_member_use to unblock the engine roller by @LongCatIsLooong in #132280
• Keep alive support for 2D scrolling by @Piinks in #131641
• Fix DropdownButtonFormField input border clipping by @TahaTesser in #131481
• Fix PopupMenuItem & CheckedPopupMenuItem has redundant ListTile padding and update default horizontal padding for Material 3 by @TahaTesser in #131609
• Analyze code snippets in flutter_test docs by @goderbauer in #132246
• Add hasInteractedByUser getter in FormField by @dumazy in #131539
• An example of parentData usage. by @Hixie in #131818
• TextPainter migration cleanup by @LongCatIsLooong in #132317
• Upgrade flutter packages. by @polina-c in #132326
• GridView sample code by @Hixie in #131900
• setState documentation by @Hixie in #132090
• TextField should correctly resolve provided style for material states by @Renzo-Olivares in #132330
• Adds SemanticsNode Finders for searching the semantics tree by @pdblasi-google in #127137
• Analyze code snippets in integration_test docs by @goderbauer in #132314
• Remove the fast reassemble / single widget reload feature by @Hixie in #132255
• Add double click and double click + drag gestures to SelectionArea by @Renzo-Olivares in #124817
• Read --dart-define in RendererBinding.initInstances() by @LongCatIsLooong in #132408
• Revert "Fix PopupMenuItem & CheckedPopupMenuItem has redundant ListTile padding and update default horizontal padding for Material 3" by @CaseyHillers in #132457
• Unpin leak_tracker and handle breaking changes in API. by @polina-c in #132352
• Update menu examples for SafeArea by @TahaTesser in #132390
• Selection area should move selection word by word on a long press drag by @Renzo-Olivares in #132518
• Updates AutomatedTestWidgetsFlutterBinding.pump to support microsecond precision by @pdblasi-google in #132401
• PaginatedDataTable improvements by @Hixie in #131374
• Further clarification of the TextSelectionControls migration by @Hixie in #132539
• Analyze code snippets in flutter_driver docs by @goderbauer in #132337
• Make completeError be a proper JS function by @srujzs in #132492
• [integration_test] Update outdated onScreenshot signature in README code snippet by @gmackall in #132409
• Upgrade flutter packages. by @polina-c in #132585
• Fixing a memory leak in About box/dialog overlays by @gspencergoog in #130842
• Reorganize and clarify API doc generator by @gspencergoog in #132353
• Fix extent for null returning builder in GridView by @Piinks in #132511
• Explain the keyboard manager protocol by @dkwingsmt in #132533
• [Reland] #131609 by @TahaTesser in #132555
• Fix some leaks and add test to test cover remaining in a simple way. by @polina-c in #131373
• Fix not-disposed _InputBorderGap. by @polina-c in #132694
• fixed documentation error input decorator by @faisalansari0367 in #132124
• Triple tap selection should not move beyond text boundary at the tapped location by @Renzo-Olivares in #132357
• Upgrade flutter packages. by @polina-c in #132697
• Fix bad pattern in 2D tests by @Piinks in #132709
• Improvements to EditableText documentation by @Hixie in #132532
• Fix lower bound of children from TwoDimensionalChildBuilderDelegate by @Piinks in #132713
• Improve and optimize non-uniform Borders. by @bernaferrari in #124417
• Disable test order randomization on some leak tracker tests that are failing with today's seed by @jason-simmons in #132766
• Update Scrollable on ScrollBehaviour change. by @chinmoy12c in #131164
• Leaks fix. by @polina-c in #132778
• [Framework] Add Share to selection controls by @LouiseHsu in #132599
• Allow date pickers to not have selected date by @Hixie in #132343
• Reland root predictive back by @justinmc in #132249
• fixes l10n for CupertinoDatePicker in monthYear mode by @AndreySuworow in #130934
• Add a new MatrixTransition and refactor ScaleTransition and RotationT… by @gmilou in #131084
• SelectionArea on iOS should toggle the context menu when tapping on the previous selection by @Renzo-Olivares in #132851
• When resized network image has error, all future unrelated images using the same url will fail, even if the network becomes OK by @fzyzcjy in #127456
• Docs on iOS's directional quote characters by @justinmc in #132869
• Update ExpansionPanel example for the updated expansionCallback callback by @TahaTesser in #132837
• Add deleteBackwardByDecomposingPreviousCharacter mapping for tests by @angelosilvestre in #132919
• Fix visual overflow for SliverMainAxisGroup by @Piinks in #132989
• Cover more tests with leak tracking. by @polina-c in #132806
• Fix memory leak in Form by @justinmc in #132987
• Add support for Future<List<int>?> to MatchesGoldenFile by @iinozemtsev in #132965
• Fix FlexibleSpaceBar.title doesn't respect the leading widget by @TahaTesser in #132573
• Update default menu text styles for Material 3 by @TahaTesser in #131930
• Add test to mark recording as leaking. by @polina-c in #133073
• Reference AppLifecycleListener from widgets library by @Hixie in #132995
• Remove deprecated *TestValues from TestWindow by @goderbauer in #131098
• Enable literal_only_boolean_expressions by @goderbauer in #133186
• Enable ChangeNotifier clients to dispatch event of object creation in constructor. by @polina-c in #133060
• Remove deprecated MaterialButtonWithIconMixin by @Piinks in #133173
• Remove deprecated PlatformViewsService.synchronizeToNativeViewHierarchy by @Piinks in #133175
• Remove ImageProvider.load, DecoderCallback and PaintingBinding.instantiateImageCodec by @LongCatIsLooong in #132679
• Users of ChangeNotifier should dispatch event of object creation in constructor. by @polina-c in #133210
• Add hover duration for Inkwell widget by @whiskeyPeak in #132176
• l10n-related documentation improvements by @Hixie in #133114
• Update the tool to know about all our new platforms by @Hixie in #132423
• Dispose overlay entries by @tgucio in #132826
• Fix Chip.shape's side is not used when provided in Material 3 by @TahaTesser in #132941
• Fix PopupMenuItem with a ListTile doesn't use the correct style. by @TahaTesser in #133141
• Update flutter packages to pick up latest vm_service by @kenzieschmoll in #133335
• Add an example showing how to use a MatrixTransition. by @gmilou in #132874
• Remove deprecated androidOverscrollIndicator from ScrollBehaviors by @Piinks in #133181
• Remove deprecated onPlatformMessage from TestWindow and TestPlatformDispatcher by @Piinks in #133183
• Adds callback onWillAcceptWithDetails in DragTarget. by @chinmoy12c in #131545
• _SelectableFragment should dispatch creation in constructor. by @polina-c in #133351
• PlatformRouteInformationProvider should dispatch creation in constructor. by @polina-c in #133353
• added option to change color of heading row(#132428) by @salmanulfarisi in #132728
• Fix stuck predictive back platform channel calls by @justinmc in #133368
• ShortcutManager should dispatch creation in constructor. by @polina-c in #133356
• FocusNode and FocusManager should dispatch creation in constructor. by @polina-c in #133352
• Revert "FocusNode and FocusManager should dispatch creation in constructor." by @vashworth in #133474
• Revert "PlatformRouteInformationProvider should dispatch creation in constructor." by @vashworth in #133479
• Fix DatePickerDialog & DateRangePickerDialog overflow when resized from landscape to portrait by @TahaTesser in #133327
• Fix context menu button color on Android when textButtonTheme is set by @Renzo-Olivares in #133271
• Revert "Remove ImageProvider.load, DecoderCallback and `PaintingB… by @zanderso in #133482
• PlatformRouteInformationProvider should dispatch creation in constructor. by @polina-c in #133492
• FocusNode and FocusManager should dispatch creation in constructor. by @polina-c in #133490
• Fix bug in setPreferredOrientations example by @dnfield in #133503
• Add FAB Additional Color Mappings example by @TahaTesser in #133453
• ShortcutManager should dispatch creation in constructor. by @polina-c in #133487
• Add doxygen doc generation. by @gspencergoog in #131356
• [web] Migrate remaining web-only API usages to dart:ui_web by @mdebbar in #132248
• Added DropdownMenuEntry.labelWidget by @HansMuller in #133491
• Cover more tests with leak tracking. by @polina-c in #133596
• Upgrade packages. by @polina-c in #133593
• Fix one notDisposed leak and mark another. by @polina-c in #133595
• [flutter roll] Revert "Fix Chip.shape's side is not used when provided in Material 3" by @XilaiZhang in #133615
• Update SelectableRegion test for M3 by @bleroux in #129627
• Update & improve TabBar.labelColor tests by @TahaTesser in #133668
• Reland "Remove ImageProvider.load, DecoderCallback and PaintingBinding.instantiateImageCodec (#132679) (reverted in #133482) by @LongCatIsLooong in #133605
• Expose barrierDismissible in PageRoute constructor by @bleroux in #133659
• Fixing memory leak in EditableTextState by @Renzo-Olivares in #131377
• Add cancelButtonStyle & confirmButtonStyle to the DatePickerThemeData by @TahaTesser in #132847
• Updated DropdownMenu example and added a test by @HansMuller in #133592
• Fix cancelButtonStyle & confirmButtonStyle properties from TimePickerTheme aren't working by @TahaTesser in #132843
• Forward-fix a test that will break with an engine roll. by @matanlurey in #133619
• _RawAutocompleteState should dispose _highlightedOptionIndex. by @polina-c in #133700
• Mark routing test as leaking. by @polina-c in #133697
• Mark leak in _DraggableScrollableSheetState. by @polina-c in #133693
• [framework] use ImageFilter for stretch overscroll. by @jonahwilliams in #133613
• InputDecorationTheme.isCollapsed doesn't work if InputDecoration.isCollapsed is not provided. by @opxdelwin in #133189
• ScrollController creation dispatching for memory leaks tracking by @ksokolovskyi in #133759
• Cover some test/widgets tests with leak tracking by @ksokolovskyi in #133767
• Introduce architecture subdirectory for Windows build (#129805, #116196) by @pbo-linaro in #131843
• Revert "Cover some test/widgets tests with leak tracking" by @vashworth in #133779
• _ResetNotifier should communicate creation in constructor. by @polina-c in #133716
• _FocusTraversalGroupNode should communicate creation in constructor. by @polina-c in #133717
• Test cover more tests with leak tracking. by @polina-c in #133712
• Fix cursorColor with an opacity is not respected by @TahaTesser in #133548
• Revert "Fixing memory leak in EditableTextState" by @Renzo-Olivares in #133804
• Add MacOS AppKitView class. by @yaakovschectman in #132583
• Fix sample code crash, add test by @Piinks in #133812
• Make Route dispatching memory events. by @polina-c in #133721
• Fix clipBehavior ignored in Scrollable of SingleChildScrollView by @Piinks in #133696
• Add an example for InputChip generated by user input by @andreacioni in #130645
• Fix MaterialState.pressed is missing when pressing button with keyboard by @bleroux in #133558
• Add more documentation for SystemChannels.keyboard getKeyboardState by @bleroux in #133663
• Fixed PaginatedDataTable not using dataRowMinHeight and dataRowMaxHeight from Theme by @MarkOSullivan94 in #133634
• Adds a parent scope TraversalEdgeBehavior and fixes modal route to no… by @chunhtai in #130841
• Test cover more tests with leak tracking. by @polina-c in #133828
• Remove deprecated TestWindow.textScaleFactorTestValue/TestWindow.clearTextScaleFactorTestValue by @Renzo-Olivares in #133176
• Remove deprecated TestWindow.platformBrightnessTestValue/TestWindow.clearPlatformBrightnessTestValue by @Renzo-Olivares in #133178
• Mark leak in _DayPickerState. by @polina-c in #133863
• MaterialStatesController should dispatch creation in constructor. by @polina-c in #133826
• RestorableProperty should dispatch creation in constructor. by @polina-c in #133883
• Fix for new analyzer lint by @zanderso in #133923
• Reland leak fix for EditableTextState by @Renzo-Olivares in #133806
• SegmentedButton should not create new MaterialStatesController in every build. by @polina-c in #133949
• Revert "Adds a parent scope TraversalEdgeBehavior and fixes modal rou… by @itsjustkevin in #134565
• Manual roll of engine by @itsjustkevin in #134595

Tooling

• Locate the template directory using a TemplatePathProvider. by @chingjun in #132156
• New tooling for iOS 17 physical devices by @vashworth in #131865
• Allows adding a storage 'realm' to the storage base URL by @zanderso in #131951
• Pin leak_tracker. by @polina-c in #132261
• Add --local-engine-host, which if specified, is used instead of being inferred by @matanlurey in #132180
• Fix flutter attach local engine by @christopherfujino in #131825
• Fix: use --web-launch-url and --web-hostname arguments in flutter drive by @deldering-momo in #131763
• Update flutter_tools/bin/*.(dart|sh) to provide, if set, --local-engine-host. by @matanlurey in #132336
• Send test message channel from the test frame by @natebosch in #131881
• Update DWDS to 20.0.1 in flutter_tools by @elliette in #132350
• Fix log filtering and CI tests for iOS 17 physical devices by @vashworth in #132491
• Update dev/bots/test.dart (and friends) to provide --local-engine-host. by @matanlurey in #132354
• [flutter_tools] hide Skia specific rendering options. by @jonahwilliams in #132509
• Update flutter_tools internals related to Gradle/XCode to set --local-engine-host. by @matanlurey in #132346
• Fix flutter_tools use of --local-engine-host by @whesse in #132648
• Add support for LOCAL_ENGINE_HOST to Linux/Mac/Win builds. by @matanlurey in #132579
• Treat missing --local-engine-host as fatal on CI-like systems. by @matanlurey in #132707
• [Windows] Allow overwriting the cache's Dart SDK archive license file by @loic-sharma in #132669
• Revert "[Windows] Allow overwriting the cache's Dart SDK archive license file" by @yaakovschectman in #132773
• [Windows] Allow overwriting the cache's Dart SDK archive license file… by @loic-sharma in #132777
• Fix the name of the local-engine-host flag in the warning message by @jason-simmons in #132808
• Fix description in index.html / manifest.json getting double quoted by @navaronbracke in #131842
• [flutter_tools] Generate localizations on flutter pub get by @thkim1011 in #132172
• Fix Xcode 15 build failure due to DT_TOOLCHAIN_DIR by @vashworth in #132803
• doc: add flag params by @0o001 in #132485
• Updates app link gradle tasks and remove vm services by @chunhtai in #131805
• Space character should be optional when tree shaking fonts by @eyebrowsoffire in #132880
• Always require --local-engine-host if --local-engine by @matanlurey in #133003
• Support disabling animations in the CLI by @Hixie in #132239
• Add --experimental-wasm-type-reflection and support newer emscripten builds. by @eyebrowsoffire in #133084
• [flutter_tools] Fix legacy version file not being ensured by @christopherfujino in #133097
• Add android analyzer commands for applinks by @chunhtai in #131009
• Fix mac tool_integration_tests with Xcode 15 by @christopherfujino in #133217
• handle exceptions raised while searching for configured android studio by @andrewkolos in #133180
• Allow passing verbose log from flutter daemon. by @chingjun in #132828
• Use a fake stopwatch to remove flakiness. by @Hixie in #133229
• No longer include .packages in created .gitignore files by @parlough in #133484
• Bump gradle heap size limits in templates by @zanderso in #133671
• [flutter_tools] print out the unzipping method used by update_dart_sdk.ps1 by @christopherfujino in #133364
• Improve doctor output on incomplete Visual Studio installation by @loic-sharma in #133390
• Removes ios universal link vmservices and let xcodeproject to dump js… by @chunhtai in #133709
• [flutter_tools] Fix flutter upgrade not finding git tags by @christopherfujino in #133778
• fix install checks in flavors devicelab tests by @andrewkolos in #133719
• [flutter_tools] Fix TypeError when a FileSystemException happens during flutter doctor by @christopherfujino in #133373

New Contributors

• @aakash-pamnani made their first contribution in #130389
• @dumazy made their first contribution in #131539
• @deldering-momo made their first contribution in #131763
• @faisalansari0367 made their first contribution in #132124
• @AndreySuworow made their first contribution in #130934
• @gmilou made their first contribution in #131084
• @0o001 made their first contribution in #132485
• @angelosilvestre made their first contribution in #132919
• @iinozemtsev made their first contribution in #132965
• @salmanulfarisi made their first contribution in #132728
• @pbo-linaro made their first contribution in #131843
• @andreacioni made their first contribution in #130645
• @MarkOSullivan94 made their first contribution in #133634

Engine

Android

• Use the Clang unreachable code warning flag in the engine tree by @jason-simmons in flutter/engine#44458
• Android a11y bridge sets importantness by @chunhtai in flutter/engine#44452
• Revert "Android a11y bridge sets importantness" by @zanderso in flutter/engine#44569
• [Impeller] Support for Android Platform Views under Impeller/Vulkan by @johnmccutchan in flutter/engine#44571
• Reland "Android a11y bridge sets importantness" by @chunhtai in flutter/engine#44589
• Fix unexpected pointer change issue and Add test case by @LoveJello in flutter/engine#43949
• Add support for HardwareBuffer backed Android Platform Views under Impeller/GLES by @johnmccutchan in flutter/engine#44617
• Rename impeller::TextureIntent to impeller::TextureCoordinateSystem by @johnmccutchan in flutter/engine#44628
• Namespace imports with flutter by @jiahaog in flutter/engine#44709
• Add support for SurfaceTexture based external textures on Android under Impeller/GLES. by @johnmccutchan in flutter/engine#44734
• Fix clang_tidy lints by @johnmccutchan in flutter/engine#44740
• Enabling the host application to control the timing of attaching the |FlutterView| to the engine by @0xZOne in flutter/engine#43595
• Conditionally enable HardwareBuffer backed platform views by @johnmccutchan in flutter/engine#44744
• Switch some ERROR logs to WARNING logs by @johnmccutchan in flutter/engine#44784
• Revert "Conditionally enable HardwareBuffer backed platform views (#44744)" by @jason-simmons in flutter/engine#44785
• Basic view management for engine classes by @dkwingsmt in flutter/engine#42991
• Reenable HardwareBuffer backed Android Platform Views on SDK >= 29 by @johnmccutchan in flutter/engine#44790
• Fix FlutterInjectorTest assumptions about how the executor service assigns tasks to threads by @jason-simmons in flutter/engine#44775
• [Android] Expose channel buffer resize and overflow calls by @bleroux in flutter/engine#44434
• Implementing TextScaler for nonlinear text scaling by @LongCatIsLooong in flutter/engine#42062
• Revert "Implementing TextScaler for nonlinear text scaling" by @jonahwilliams in flutter/engine#44882
• Reland "Implementing TextScaler for nonlinear text scaling (#42062)" by @LongCatIsLooong in flutter/engine#44907
• i82973 scroll mouse wheel support by @reidbaker in flutter/engine#44724
• Restore old SurfaceTextureExternal drawing code by @johnmccutchan in flutter/engine#44979
• Eliminate android test log spam by @reidbaker in flutter/engine#44982
• Followup to flutter/engine#44982 by @reidbaker in flutter/engine#45018
• Add case checking to android sdk cipd upload script by @gmackall in flutter/engine#45063
• [Impeller] Do not build scene unless 3d define is true by @dnfield in flutter/engine#45028
• [Impeller] DlAiksCanvas as a DlCanvas wrapper for impeller::Canvas by @dnfield in flutter/engine#45131
• Revert "[Impeller] DlAiksCanvas as a DlCanvas wrapper for impeller::Canvas" by @jonahwilliams in flutter/engine#45149
• [Impeller] Sync presentation when rendering into FlutterImageView. by @jonahwilliams in flutter/engine#44881
• [Impeller] Reland DlAiksCanvas by @dnfield in flutter/engine#45232
• Revert dl split by @zanderso in flutter/engine#45326
• [Impeller] turned on validations for all debug builds by @gaaclarke in flutter/engine#45350
• Remove deprecated MOCK_METHODx calls by @dkwingsmt in flutter/engine#45307

iOS

• [macOS] Fix engine/binaryMessenger retain cycle by @cbracken in flutter/engine#44471
• Flutter iOS Interactive Keyboard: Handle Pointer Up by @Matt2D in flutter/engine#44457
• Flutter iOS Interactive Keyboard: Fixing Animation Issue by @Matt2D in flutter/engine#44514
• Flutter iOS Interactive Keyboard: Fixing Behavior Issue by @Matt2D in flutter/engine#44586
• Allow macOS plugins to register as app delegates by @stuartmorgan in flutter/engine#44587
• Fix search web test by @LouiseHsu in flutter/engine#44704
• [Impeller] Update docstring on layer.presentsWithTransaction by @dnfield in flutter/engine#44782
• [ios][ios17]fix auto correction highlight on top left corner by @hellohuanlin in flutter/engine#44779
• Add share to selection controls by @LouiseHsu in flutter/engine#44554
• Roll clang with fix for ABI change by @zanderso in flutter/engine#44711
• Fix a clang-tidy error seen in the latest toolchain roll by @jason-simmons in flutter/engine#45039
• Ignore unguarded-availability for unit test by @cyanglaz in flutter/engine#44852
• ios: remove shared_application and support app extension build by @cyanglaz in flutter/engine#44732
• [iOS] Don't call App lifecycle resumed when device is locked by @zhongwuzw in flutter/engine#44947
• [Impeller] its not safe to presentWithTransaction from a background thread. by @jonahwilliams in flutter/engine#45182
• [flutter roll] Revert "ios: remove shared_application and support app extension build" by @XilaiZhang in flutter/engine#45250
• [macOS] Link __availability_version_check by @cbracken in flutter/engine#45333
• Reland "Build iOS unittest target in unopt builds" (#44356)" by @cyanglaz in flutter/engine#44821
• Revert "Reland "Build iOS unittest target in unopt builds" (#44356)"" by @zanderso in flutter/engine#45346
• Reland "ios: remove shared_application and support app extension build #44732" by @cyanglaz in flutter/engine#45351
• [ios][ios17][text_input]fix text input system highlight in iOS 17 Beta 7 with firstRectForRange by @hellohuanlin in flutter/engine#45303

Web

• [web] Expose the benchmark callback through dart:ui_web by @mdebbar in flutter/engine#44461
• Disable HTML renderer paragraph input width flooring by @LongCatIsLooong in flutter/engine#44478
• [web] Fix rendering of gradients in html mode by @xtyxtyx in flutter/engine#40345
• Make toJS'd function use JS types by @srujzs in flutter/engine#44469
• Disable text rounding hack by default by @LongCatIsLooong in flutter/engine#44544
• allow ParagraphBuilder.shouldDisableRoundingHack to actually be set to false in tests by @LongCatIsLooong in flutter/engine#44647
• hasStrings for web by @justinmc in flutter/engine#43360
• Migrate more GL calls of GrBackend* by @kjlubick in flutter/engine#44682
• Update CompositionAwareMixin to correctly compute composingBase in Web engine by @Amir-P in flutter/engine#44139
• Update web_ui/** to explicitly pass --local-engine-host to the flutter tool. by @matanlurey in flutter/engine#44613
• Reset editing delta state when replacing editing state by @knopp in flutter/engine#44595
• Add more tests for CompositionAwareMixin by @Amir-P in flutter/engine#44717
• [web] Move remaining web-only APIs to dart:ui_web by @mdebbar in flutter/engine#44516
• Make web tests start with an empty title by @Hixie in flutter/engine#43846
• FontVariation.lerp, custom FontVariation constructors, and more documentation by @Hixie in flutter/engine#43750
• Revert "FontVariation.lerp, custom FontVariation constructors, and more documentation" by @zanderso in flutter/engine#44993
• FontVariation.lerp, custom FontVariation constructors, and more documentation by @Hixie in flutter/engine#44996
• [web] Remove some unused functions by @mdebbar in flutter/engine#44505
• Revert "FontVariation.lerp, custom FontVariation constructors, and more documentation" by @zanderso in flutter/engine#45023
• FontVariation.lerp, custom FontVariation constructors, and more documentation by @Hixie in flutter/engine#45030
• Skwasm platform views by @eyebrowsoffire in flutter/engine#43011
• [skwasm] encode PNGs using browser APIs by @eyebrowsoffire in flutter/engine#45187
• Fix scene view canvas/platform view placement. by @eyebrowsoffire in flutter/engine#45199
• [web] Make devicePixelRatio ready for multi-view by @mdebbar in flutter/engine#44783
• Add callback to Embedder API to respond to new channel listeners, and use for Windows lifecycle by @yaakovschectman in flutter/engine#44827
• Add an API in ui_web to create a ui.Image from an ImageBitmap by @eyebrowsoffire in flutter/engine#45256
• [web] Roll to most recent fallback font data by @eyebrowsoffire in flutter/engine#45301
• [web] More efficient fallback font selection by @rakudrama in flutter/engine#44526

Desktop

• [macOS] Improve engine retain cycle testing by @cbracken in flutter/engine#44509
• [Windows] Return keyboard pressed state by @bleroux in flutter/engine#43998
• Reintroduce Windows lifecycle with guard for posthumous OnWindowStateEvent by @yaakovschectman in flutter/engine#44344
• Add application:openURLs: forwarding on macOS by @stuartmorgan in flutter/engine#44689
• [Windows] Delay enabling app lifecycle states until requested by @yaakovschectman in flutter/engine#44238
• [macOS] Implement unobstructed platform views by @knopp in flutter/engine#42960
• [Windows] Update vsync on raster thread by @loic-sharma in flutter/engine#45310

New Contributors

• @xtyxtyx made their first contribution in flutter/engine#40345
• @LoveJello made their first contribution in flutter/engine#43949
• @Amir-P made their first contribution in flutter/engine#44139
• @yatendra2001 made their first contribution in flutter/engine#44880
• @HosseinYousefi made their first contribution in flutter/engine#45180
• @rakudrama made their first contribution in flutter/engine#44526