Pawns stuck hauling

Having an issue after building a stairs to go up in z level. Once the stairs are complete and a pawn goes to haul something they get stuck in a loop of picking up and placing the item in the same spot. I removed the stairs to go up and the pawns return to normal behavior with picking up and hauling the items. I am able to repeat this by placing stairs to go up again. Stairs to go down works fine.