[Milhouse]

well, what happened before was, that the current video stopped, the pi went into this suspend mode and when i turned the tv back on, there was a black screen until i pressed a button. After that i was back on my shows episode list (or where i was when i started the video before)

Now its not doing any of that.

I have set Power Saving to Suspend. No timer, never had one

"vcgencmd display_power" returns a 1...

And you had this behaviour with #0619, but not #0627?

Can you upload a debug log using build #0619 showing you playing a video then switching off your TV until the point at which the Pi has suspended, followed by the same test using build #0627? I'm not familiar with this "TV switch off initiates suspend mode" - I use just the timer (15 minutes).