If Satsujin's Ultimate hit a target and it doesn't die, the target Perpetual Slashes no longer go off all at once and only 1 Perpetual Slash after a sheathed attack or occasionally happen. This can sometime be fix by going to different dimention.
However. If a Training Golem is being attack by Perpetual Slashes and manage to interrupt the player (or it get interrupt by an animation in the case of the humanoid golem) after the first Satsujin's Ultimate attack, the Training Golem is forever stuck in the state above with no way of fixing it.