I also caught a very funny bug, maybe I was just lucky, maybe it will help someone if they have problems with killing lvl 120 Blazing Cutlass
Which is located right here
Usually the game creates a wall around the arena that does not allow you to leave it. But I personally passed through it as if it was not there, you can stand on this teleportation pole next to the arena
You will have infinite healing, and even if he starts killing someone, the character will immediately be resurrected.
I'm busy right now and unfortunately I can't test it on other bosses yet, but if this isn't a single bug and works on other arenas, then what can I say, it's fun