I find a bug when fighting the boss Vessel of Kulemak.

I posted on this forum a week ago. How is this STILL an issue. This fight is simply NOT fun. I am NOT having any fun rn still trying to grind to get the new ascendency I based my whole build around. The juice at this point is absolutely not worth this squeeze. PLEASE DO SOMETHING

I managed to kill it, but... oh boy... it is very frustrating when you can't see sh*t about its health and satus.

I don't know if they changed something in the past couple days but I no longer get any undying hate diamond drops from the boss either. I was farming them no problem previously and then suddenly nothing. I changed my gear to 345 rarity and farmed him for the whole day yesterday. Literally all day and not one map and I got nothing but the disappointing staff and belts. Has anyone else noticed a change in the drops from the Uber boss?!?

Will there be any update to this fight to understand what happens during the fight? Health bar disappearing is still there but the mechanics themselves are terrible and too many for that small an arena. Supposed to be an ascendancy fight; understand it has to be harder than usual since its a league boss but it kills the urge to play it when as a lich, I can't ascend to an abyssal lich. If the only solution is to get more damage to nuke it, guess I'll try it again after a few upgrades and levels but this is underwhelming boss design.
Please bring back the POE1 designers in between the POE1 leagues to review this work.

Same issue. Died on final stage, after returning the finger or whatever, came back and there was no health bar. I stayed alive for a solid 5 minutes, nuking him and he didn't die. I have a feeling he's not even taking dmg. My build allows me to drop him within 10 seconds in the first 4 stages... and I know he's tougher, but if he is taking dmg this is a bit ridiculous.

Boss becomes invincible if you die during the last phase. no health bar appears either.

Okay, after trying a few different options, I figured out what’s happening.
His HP bar disappears after you die in any of his phases.
To make it reappear (while playing solo), you need to wait until the dinosaur starts respawning — basically, wait until his body begins to float — and then press Exit to Character Selection.
Log back into your character immediately, and the HP bar will return until you finish all phases.
If you die again, repeat the same steps: wait until the body starts floating, go to the character selection screen, and log back into the game.
It’s super frustrating, but at least this workaround actually works.

holy shit, this worked and helped alot. Thanks! Hope they actually fix the bug