Even though I've Xmode turned off this happens.
When I go into recents and come back, while playing PUBG.
Are you still experiencing this issue? Please mention my name or reply me in our existing conversation
Yes I still have this, but I doubt this is a bug. I've seen if system lighting is turned off. This dosen't happen.
ok, I thought you meant that all system lighting was turned off. You most probably had Games activated under system lighting. So every time you jumped between the game and recent apps overview, it triggered this lightning effect