Weird Black Box Appearing above Chat Only Ingame?

There’s a weird black Box Appearing Over the Chat It does not appear in Screenshots nor on the Desktop or in Any other Games, it looks Exactly like this.

it’s got something to do with Geforce Experience…

it’s either related to the Reflex flash indicator or the (webcam) overlay settings afaik. i haven’t used GFE in years so i don’t know exactly what it is but that’s where to should start looking ^^

Thanks this Fixed it for me… sucks I cant have Shadowplay but yeah it worked :D