We killed some cows on severograds stone quarry. I returned to my friend and he was crouching. We moved forward. His character was stuck in the crouching position and yet he was moving forward. not leg movement, no body movement at all. He was not taking steps to move forward. It looked like he was flying above the ground. I told him to stand up, crouch stand up again etc. Didn't help but got him stuck into a different position. We kind of got rid of it over time (didnt log out/no server restart)