Defective display macbook 16 m1
MacBook Pro (2020 and later)
MacBook Pro (2020 and later)
If you feel your Mac screen is defective, take it to Apple for a hands-on evaluation.
It looks to me that an active screen element (a video maybe) that should be offscreen is just barely visible. But that is strictly just a guess.
Defective display macbook 16 m1