evil snake Napaz BUG

When I roll and dodge attacks in the level of the evil snake Napaz, my character gets stuck in place. I can't move, and I can't attack the boss. At the same time, the boss is also far away from me.
The above situation has occurred twice.
The first time, because the square was shrinking, I was stuck on the periphery of the square,
The second time, there was no change of formation. When I tried to dodge the boss skill, I got stuck in the formation.