Steps to reproduce:

1. Open the MediaPlayApp from the Qt examples
2. Open this video wow_Eversong.mp4   Looks like this has something to do with the video length, because short videos resume just fine. I had to heavily compress the video to upload it here.
3. Press play
4. Enter Windows Sleep
5. Wake up from sleep
6. Media player is now in a state where resuming playback does not work. Only seeking will fix the play state and everything will work normally again.

I face this issue in ScreenPlay where my desktop video wallpaper never start playing again.

Demo:

qtcreator_PqCMiP91VR.mp4