I came across a bug while mirroring my screen to a Miracast HDMI dongle. As soon as the screen locks, either by timeout or when I hit the power button, I cannot unlock the phone anymore.
The screen goes on and off again, the wallpaper gets changed to a default one. This goes on till I unpower the dongle, then it normalizes, but keeps the wrong wallpaper.
I used another dongle, same problem. I also removed pattern-lock, no success.
Can anyone confirm this? I guess it only happens on mirroring. I am running on 18.04.1. I haven’t found anything the like as a general Android issue, so it would be nice to know if it only happens on my device or on others as well.