I recently switched to experimental and had fun trying it but when i try to walk toward a staircase my character acts as if he's trying to walk into a wall. Changing angle sometimes helps but in a tight spot it can cause trouble. One time i tried for 10-15 seconds to get on to the first step. After first step there seems to be no problem. But if i was in trouble this bug could easily kill me. It happens more often in steep staircases like the ones in firestation tower.