World Composition Map - Single Tile is blurry?

I did a build with only one tile / sub-level visible and i clicked through some warnings, and now when I look at the world composition map that tile is blurry. The other tiles appear normal. If i select that tile then the entire WC map looks blurry too. Please help - not sure what I did.

thank you
191805-191806-

Same problem, I don’t know how, my world composition window is even more blurrier and the background is white