Sources: release notes 3.13.0, breaking changes, CHANGELOG.md
Missing calls to 'dispose()' are added for some disposable objects. For example, ContextMenuController did not dispose OverlayEntry, and EditableTextState did not dispose TextSelectionOverlay.
A new `hidden` state was added to the `AppLifecycleState` enum to denote when the application is not visible.
`ReorderableListView`'s localized strings were moved from material localizations to widgets localizations. These strings were deprecated in material localizations.
The `Editable.onCaretChanged` callback is removed. With this change, `EditableText` behavior for scrolling the selection into view changes.
How to update a Windows project to ensure the window is shown
The `Checkbox.fillColor` is now applied to the checkbox's background when the checkbox is unselected.
In accordance with Flutter's Deprecation Policy, deprecated APIs that reached end of life after the 3.10 stable release have been removed.
The `IgnoringPointer` widget allows you to designate an area of the UI where you don't want to accept pointer events, for example, when you don't want to allow the user to enter text in a text field.
`RouteInformation.location` and related APIs were deprecated in the favor of `RouteInformation.uri`.