So, i can't quite repeat this bug again since first of all I forgot to save screenshot, and second of all because this bug happens when the first one happens(but not always). So i will try to describe it. During the first bug the moving part loses it's walking animation and instead of it moves with frozed connection animation(when two half connect), so it looks like it looks at you and walks without even moving its legs. If i am able to find this bug again, i will send you a screenshot.