On my level-132 Demon Assassin, after using Shadow Teleport, the Sin is locked in place (stuck).
This happened three times today; once in BH99 Abaddon, and twice in Old Heaven's Tear.
In each case, the only way I could get unstuck was by logging out. ESC did not remedy the problem, nor did trying to use Shadow Jump ... or just plain jumping.
Coincidentally, each time this occured on level ground, free of obstructions.