Blurry screen top left corner.

Hello,

While browsing the internet my left corner blurred.

Iphone 13 pro without any case.

There was no wire/magsafe connected at that time.

iOS 15.6

During the blurring screen I open notification center (from left corner) and see correct screen.

Fixed via switching dark mode and back to light mode.

Do you know what causes this problem?

How can this problem be definitely solved?

Regards

Piotr Maluty