[Bug report] Request Focus TextFormField not Scroll Correctly

[sed1ka]

Version

6.1.2

Platforms

Android, (untested on iOS)

Device Model

Xiaomi Redmi 9T

flutter info

[√] Flutter (Channel stable, 3.13.3, on Microsoft Windows [Version 10.0.19043.1766], locale en-US)
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[√] Windows Version (Installed version of Windows is version 10 or higher)

[√] Android toolchain - develop for Android devices (Android SDK version 33.0.2)
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[√] Android Studio (version 2022.2)
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[√] Connected device (3 available)
    • Windows (desktop) • windows • windows-x64    • Microsoft Windows [Version 10.0.19043.1766]
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[√] Network resources
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! Doctor found issues in 1 category.

How to reproduce?

Run my example code I provide

The Bug:
When you tap/request to focus the TextField B the scroll will be reset to the top instead scrolling to the TextField B.
The bug only happen if:

1. The body in ExtendedNestedScrollView contains more than one TextFormField.
2. The TextFormField is on bottom of view port. Make sure the TextFormField is covered by the keyboard screen when you press the TextFormField.

Example code (optional)

class ExampleView extends StatefulWidget {
  const ExampleView({super.key});

  @override
  State<KrediCashView> createState() => _ExampleViewState();
}

class _ExampleViewState extends State<ExampleView> {
  final FocusNode focusNodeA = FocusNode();
  final FocusNode focusNodeB = FocusNode();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: ExtendedNestedScrollView(
        headerSliverBuilder: (_, __) {
          return [
            SliverAppBar(
              title: Text('Bug Focus Node'),
            ),
          ];
        },
        body: SingleChildScrollView(
          child: Column(
            children: [
              const SizedBox(height: 1000),
              TextFormField(
                focusNode: focusNodeA,
                decoration: InputDecoration(
                  labelText: 'TextField A',
                ),
              ),
              const SizedBox(height: 1000),
              TextFormField(
                focusNode: focusNodeB,
                decoration: InputDecoration(
                  labelText: 'TextField B',
                ),
              ),
              const SizedBox(height: 10),
            ],
          ),
        ),
      ),
    );
  }
}

[zmtzawqlp]

It's better to create an issue for Flutter team first.

[sed1ka]

The bug only happen with the ExtendedNestedScrollView.
Using NestedScrollView with SingleChildScrollView will give result as expected.

It's better to create an issue for Flutter team first.

[sed1ka]

Mysteriously the bug doesn't happen anymore. Even though I haven't made any fix. So I will close the issue