right now i had a new bug.
i minimized the game to take a look at my browser(firefox), came back into the game and lost the control of turning the body. with that, i could only walk straight on (no left or right possible). instead, i could turn my head 180° in both directions, looking into my own throat. aiming was possible, but only about 30° in front of me.. like you see in the video.
after relogging, this bug disappeared.