Repository: flutter
Issue: DropdownMenu isn't visible if it is aligned with top of keyboard
Labels: a: text input,framework,f: material design,has reproducible steps,P2,team-design,triaged-design,found in release: 3.19,found in release: 3.22

### Steps to reproduce

If a `DropdownMenu` widget by coincidence is aligned with the top of the virtual keyboard, it does not expand as expected.

In our app this happens on some devices in the registration screen, there is a dropdown to select countries and on for instance iPhone 12 this widget is perfectly aligned with the top of the keyboard and the users do not get the list when the input field gets the focus.

The attached sample code is a minimal working example for an iPhone 15 screen as in the video. It is based on the official sample code for the DropdownMenu widget.

### Expected results

DropdownMenu entries should expand.

### Actual results

DropdownMenu entries do not expand/not visible.

### Code sample

<details open><summary>Code sample</summary>

```dart
import 'package:flutter/material.dart';
void main() {
  runApp(const DropdownMenuExample());
}
enum ColorLabel {
  blue('Blue', Colors.blue),
  pink('Pink', Colors.pink),
  green('Green', Colors.green),
  yellow('Orange', Colors.orange),
  grey('Grey', Colors.grey);
  const ColorLabel(this.label, this.color);
  final String label;
  final Color color;
}
class DropdownMenuExample extends StatefulWidget {
  const DropdownMenuExample({super.key});
  @override
  State<DropdownMenuExample> createState() => _DropdownMenuExampleState();
}
class _DropdownMenuExampleState extends State<DropdownMenuExample> {
  final TextEditingController colorController = TextEditingController();
  ColorLabel? selectedColor;
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData(
        useMaterial3: true,
        colorSchemeSeed: Colors.green,
      ),
      home: Scaffold(
        body: SafeArea(
          child: ListView(
            children: <Widget>[
              TextField(),
              Padding(
                padding: const EdgeInsets.symmetric(vertical: 20),
                child: Row(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: <Widget>[
                    DropdownMenu<ColorLabel>(
                      initialSelection: ColorLabel.green,
                      controller: colorController,
                      requestFocusOnTap: true,
                      label: const Text('Color'),
                      onSelected: (ColorLabel? color) {
                        setState(() {
                          selectedColor = color;
                        });
                      },
                      dropdownMenuEntries: ColorLabel.values
                          .map<DropdownMenuEntry<ColorLabel>>(
                              (ColorLabel color) {
                        return DropdownMenuEntry<ColorLabel>(
                          value: color,
                          label: color.label,
                          enabled: color.label != 'Grey',
                          style: MenuItemButton.styleFrom(
                            foregroundColor: color.color,
                          ),
                        );
                      }).toList(),
                    ),
                    const SizedBox(height: 710),
                  ],
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }
}
```

</details>


### Screenshots or Video

<details open>
<summary>Screenshots / Video demonstration</summary>


https://github.com/flutter/flutter/assets/48385990/19e64962-f8a6-4f6b-bc78-feba256b4b6f



</details>


### Logs

<details open><summary>Logs</summary>

```console
[Paste your logs here]
```

</details>


### Flutter Doctor output

<details open><summary>Doctor output</summary>

```console
[✓] Flutter (Channel stable, 3.19.5, on macOS 14.4.1 23E224 darwin-arm64, locale en-US)
[✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
[✓] Xcode - develop for iOS and macOS (Xcode 15.3)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2023.1)
[✓] VS Code (version 1.88.1)
[✓] Connected device (4 available)
[✓] Network resources
```

</details>