57500 SnackBarAction.createState() should have return type State (cla: yes, f: material design, framework, waiting for tree to go green)

57511 Step 2 of 3: Change opt-in default for debugCheckHasMaterialLocalizations assertion on TextField (a: internationalization, a: text input, cla: yes, f: material design, framework, team, waiting for tree to go green)

57516 Update platform_view.dart (cla: yes, framework, waiting for tree to go green)

57519 Report the accurate local position in (sliding)segmented control hit testing  (cla: yes, f: cupertino, framework, waiting for tree to go green)

57521 Move paragraph on using Navigation Rail for wide viewports only closer to the top of the API docs. (cla: yes, f: material design, framework, waiting for tree to go green)