Hi!
This one is really weird and probably too specific:
I start chromium and move it to my lower left monitor (I have 4 screens). I can do nothing with it.
I move it back to either center (the primary display) or even the upper left monitor and can type or click. I then move it to the lower left monitor back and then it's working.
As I said this really is weird. But if anyone is interested I can file a bug and do further testing.
Thank you.
Fred