What's new in Flutter 2.10

Scribble Text Input Client

Adds three methods, `showToolbar`, `insertTextPlaceholder`, and `removeTextPlaceholder` to the `TextInputClient` interface to allow the iOS 14 Scribble feature to insert and remove text placeholders and show the toolbar.

Raw images on Web uses correct origin and colors

How raw images are rendered on Web has been corrected and is now consistent with that on other platforms. This breaks legacy apps that had to feed incorrect data to `ui.ImageDescriptor.raw` or `ui.decodeImageFromPixels`, causing the resulting images to be upside-down and incorrectly colored (whose red and blue channels are swapped.)

Required Kotlin version

To build a Flutter app for Android, Kotlin 1.5.31 or greater is required.

Deprecated API removed after v2.5

In accordance with Flutter's Deprecation Policy, deprecated APIs that reached end of life after the 2.5 stable release have been removed.

- Custom embedders fail to build when using default sysroot (GCC 11).

- Flutter web apps crash when using package:freezed.

- Transform animation with BackdropFilter is causing a crash.

- App crashes after upgrading to 2.10.x using webview + video_player plugin.

- Flutter web debugger fails when using chrome 100 or greater.

- Deadlock in application startup in profile/release mode.

- ios: Visual glitch when scrolling a list in a Scaffold that has a Material and Container as bottomNavigationBar.

- Windows: Fail to launch app in debug mode.

- Error in DL bounds calculations causes incorrect SVG rendering.

- New material icons are not properly rendered.

- Linux builds default to building GLFW.

- Autofill does not work in `TextField`.

- Safari: Unable to enter text into `TextField`.

- Platform views throw fatal exception: Methods marked with @UiThread must be executed on the main thread.

- Images become corrupted when using CanvasKit.

- Don't remove overlay views when the rasterizer is being torn down.

- Avoid speculative conversion in ffi Pointer.asTypedList.