kind of just doesn't work. not giving 1 star since i admit i didnt do too much trouble shooting, but i am sure that I had this set to complete removal, i quit the app and ran it again, and all thumbnails were fully visible.

worth noting that i dont have youtube history on so the homepage for me never has thumbnails to begin with - i'm talking about thumbnails displayed to the side as you're watching a video. either way it says "all youtube pages"