Zalmranth the Colossus arena bug

I've got a bug with that boss, when he enter in phase two and call the littles mobs, my character teleport frequently under the arena and i don't see anything, i've tried take picture but i don't know how to put them with that, i play the monk and i happen almost every time i come close to the border of the arena, i tried to see it online but i don't see anything about it, my pc set up is an nvidia geforce rtx 4060 ti, 16 GO RAM, 13th Gen Intel Core i7-13700F, 3TB stockage, Windows 11. Hope it will be see and fix, thank you for that really good game still, good luck in the game and have fun :)