[Android] Software keyboard backspace makes focus highlightMode invalid

### Steps to reproduce

1. flutter create --platforms android highlightMode
2. Copy paste the code sample below
3. Start android simulator phone
4. flutter run
5. Touch the textfield to open the software keyboard and enter some text
7. Delete a letter with backspace
8. Observe the FocusHighlightMode become traditional

### Expected results

The focus highlightMode should stay `FocusHighlightMode.touch`

### Actual results

The focus highlightMode becomes `FocusHighlightMode.traditional` when pressing the backspace

### Code sample

<details open><summary>Code sample</summary>

```dart
import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(title: 'Flutter Demo', home: const MyHomePage());
  }
}

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

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    final mode = FocusManager.instance.highlightMode;

    return Scaffold(
      body: Column(
        spacing: 32,
        mainAxisAlignment: .center,
        children: [
          Text(mode.toString()),
          TextField(onChanged: (_) => setState(() {})),
        ],
      ),
    );
  }
}
```

</details>


### Screenshots or Video

<details open>
<summary>Screenshots / Video demonstration</summary>

[Upload media here]

</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, 3.38.5, on macOS 26.2 25C56 darwin-arm64, locale fr-FR) [587ms]
    • Flutter version 3.38.5 on channel stable at /Users/romanojw10/.puro/envs/stable/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision f6ff1529fd (4 weeks ago), 2025-12-11 11:50:07 -0500
    • Engine revision 1527ae0ec5
    • Dart version 3.10.4
    • DevTools version 2.51.1
    • Feature flags: enable-web, enable-linux-desktop, enable-macos-desktop, enable-windows-desktop, enable-android, enable-ios, cli-animations,
      enable-native-assets, omit-legacy-version-file, enable-lldb-debugging

[✓] Android toolchain - develop for Android devices (Android SDK version 35.0.0) [2,1s]
    • Android SDK at /Users/romanojw10/Library/Android/sdk
    • Emulator version 35.4.9.0 (build_id 13025442) (CL:N/A)
    • Platform android-36, build-tools 35.0.0
    • ANDROID_HOME = /Users/romanojw10/Library/Android/sdk
    • Java binary at: /Users/romanojw10/Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
      This is the JDK bundled with the latest Android Studio installation on this machine.
      To manually set the JDK path, use: `flutter config --jdk-dir="path/to/jdk"`.
    • Java version OpenJDK Runtime Environment (build 21.0.7+-13880790-b1038.58)
    • All Android licenses accepted.

[!] Xcode - develop for iOS and macOS (Xcode 26.2) [693ms]
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 17C52
    ✗ CocoaPods not installed.
        CocoaPods is a package manager for iOS or macOS platform code.
        Without CocoaPods, plugins will not work on iOS or macOS.
        For more info, see https://flutter.dev/to/platform-plugins
      For installation instructions, see https://guides.cocoapods.org/using/getting-started.html#installation

[✗] Chrome - develop for the web (Cannot find Chrome executable at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome) [14ms]
    ! Cannot find Chrome. Try setting CHROME_EXECUTABLE to a Chrome executable.

[✓] Connected device (2 available) [7,0s]
    • sdk gphone64 arm64 (mobile)                • emulator-5554             • android-arm64 • Android 16 (API 36) (emulator)
    • macOS (desktop)                            • macos                     • darwin-arm64  • macOS 26.2 25C56 darwin-arm64

[✓] Network resources [325ms]
    • All expected network resources are available.
```

</details>


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Uh oh!

[Android] Software keyboard backspace makes focus highlightMode invalid #180746

Steps to reproduce

Expected results

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Uh oh!

[Android] Software keyboard backspace makes focus highlightMode invalid #180746

Description

Steps to reproduce

Expected results

Actual results

Code sample

Screenshots or Video

Logs

Flutter Doctor output

Metadata

Metadata

Assignees

Labels

Type

Fields

Projects

Milestone

Relationships

Development

Issue actions