Make sure your stalls have a FULL length door on them. They may try to jump it if its only a half door. I just went through this with my yearling

horrible. The dummies that were supposed to be taking her from us to help us wean her stalled her with ANOTHER weanling so she bonded, then they tried to separate them and wondered "why is she climbing the walls?" DUH. So when we got her to the track we have the doors that are cut in half so there is a top and bottom, wellllll she tried to jump it. We ended up having to put a stall gate on the top to stop her. After about a week she was fine and we leave her open with the half door now.