ironbars don't grabb walls when placed by fill command. I'm using a command block to place down ironbars in a 3X3 opening in a wall but the ironbars don't "grab" hold to the surrounding blocks(brickblocks) they kinda just stands in the middle 2.5x3 area . if i place them manually they cover the whole 3x3 area and "grabs" the block next to them.