When playing as Unclean Beast, when I kill TB in extremely close proximity I become stuck ~50% of the time. Unclean Beast would become stuck in place, he could swivel or spin, but not move from that place. If I am chasing and kill TB, it never happens. It appears to happen mostly when TB is in Frost form. It is not directly related to the Warping Stone, as it occurs whether or not, the stone is used.