Hey Igor, been over a year since the Media widget was released. The cover image is still not working for my openHAB system?
Image items support is added for Beta 11 release (available on beta channel for now)
For me image item is not fully working
If i bind the image item to the media widget, the image is only shown for 1 or 2 seconds and then it is gone.
If I bind the same image item to room widget it works fine.
@Boogieman Thanks for reporting, will check. Just to confirm, in media widget only image property is bound, with URL is left unbound, correct?
Seems, that this was my problem 
Got image and url bound. Now, with only bounded image item it seems to work
That’s great! UI flow should be improved in the future to prevent this.