Why my lg g5 display bad after update

[AC Question]

Why after the nougat update my g5 keep showing all previous screen and things in current screen.lets say for instance I read posts here now I go to something else the contents I read here will be displayed on the next screen in the background and i can see it no matter where I go the darker the screen the more bright the background contents any help please.

 

[AlphaTango414]

Try wiping your system cache. Check all settings on your device to make sure everything looks like.

 

[JD 96]

Image retention maybe?