Default [Q] Strange Behaviour: Stock Music Player forgets where in a song it was

Hello guys,

I've been tracking a very annoying issue with HTC's stock Music App.
***Short Version***: The player "forgets" where in a song it has been and restarts the song from 0:00.

I realized it, because I listen to audiobooks a lot and it is a pain to search for the point where you've been all the time. Enough background: Here is how to reproduce it:
  1. Open the "Music" app, choose a new track, let it play for some seconds
  2. Shut down the screen with the power button (music still playing)
  3. Wake the screen with the power button and PAUSE the track
  4. Now wait for a certain amount of time. I have to wait [i]two[/i| minutes. My screen goes dark in the meantime (auto-sleep enabled)
  5. Wake the screen with the power button. 1st thing to realize: The Music widget is gone. Unlock the lockscreen --> Now the track is at 0:00 again.
  6. If this does not reproduce it (sometimes it seems to work fine): follow the above list but unlock the screen with a MotionLaunch leading to an App. From there go to Home and start Music from the homescreen.

Do you have this behaviour as well?
I have tried different versions of Viper ROM and ARHD - both react the same.

Do you think this could be a firmware issue? Or a bug in a new version of HTC's Music App?
I'm pretty sure this hasn't always been like that and I have recently updated to 2.22.401.4 with a FUU.