I did that and there isn't a preview when it's larger? I triple-checked that preview was enabled. I even tried it in a fresh file with nothing but this added to it. It also allows for placing a portion of the tiles into the banned region. It only blocks it if the player is actively standing in the banned region but doesn't block it if they are right on the edge. This causes the option for a majority of the item being placed in an area that should be off limits.