I've been raiding the apartment blocks in Dubky. One of the blocks has a staircase leading to the top ceilinged floor. There's a ladder on the top floor which leads onto the top of the building. I can climb it but when I get off it at the top, I don't actually go over the small ridge that borders the exit, so my player slips and falls onto the floor below. The ladder doesn't go to the top of the ridge so I can't get on top of the building. It's meant to be accessible because when I climb up I can see lootable items on the floor.