Description :
When you set double speed playback, dragging the progress bar will invalidate the double speed, but the displayed double speed will not change.

Step:

1. Set double speed playback.
2. Tap the progress bar to seekTo
3. speed is wired.

Example: https://github.com/flutter/plugins/tree/master/packages/video_player/video_player/example

flutter doctor
[✓] Flutter (Channel stable, 1.22.4, on macOS 11.0.1 20B29 darwin-x64, locale zh-Hans-CN)
[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.2)
[✓] Xcode - develop for iOS and macOS (Xcode 12.2)
[!] Android Studio (version 4.1)
✗ Flutter plugin not installed; this adds Flutter specific functionality.
✗ Dart plugin not installed; this adds Dart specific functionality.
[✓] VS Code (version 1.51.1)
[✓] Connected device (1 available)

! Doctor found issues in 1 category.