Single Connection Stone Dungeon Foyer Decor Offset

The decor for the 2 side walls on the Single connection Stone Dungeon Foyer is mis-alligned on the right side as you face away from the ladder towards the hall doorway. This becomes obvious if you try to place an item on the central pillar extruding from the wall on each side as the left side allows placement of items but the right side doesn't. Both sides are weird though as the items float in space and aren't actually attached to the wall.