Black information boxes on viewport

I’m new here so I don’t even know if I’m posting this question in a right way or place.
Anyway I started learning Unreal engine 2 days ago and today I came across this problem when importing FBX files.

These 8 black boxes appear on the screen.

Only way I figured out how to get rid of them is to delete the asset. Is there a way to keep the asset and remove the boxes?

Change to Lit mode