Audience with the king boss bugged (PoE2)

Hello, I've gotten my first audience with the king and decided to kill the boss instead of selling it (and that was the mistake :P). Seems that if you start labirynth phase while he's on the edge of the platforms he goes invulernable and cannot be killedt. I'm kind of sad that things like that happen, I'm not any super-hardcore gamer so losing an item worth 7 divine orbs is undeniably very big loss for me. You can check out how it looks on video, I would really hope to get Audience item back, or at least make support fix this bug asap as im not the first person encountering it ;)

https://youtu.be/MWj3FP9T6_Q