Malachai Invulnerable Forever

Here is a short video showing what happened to me. Similar thing.

Someone on reddit posted it may have something to do with zoning in/out at various times during his invuln phases.

https://www.youtube.com/watch?v=b9mNXK12RtQ

Add me to the list, I was using a Shadow using Frost Blades and he just stopped around the comma in his name after the first heart. Also, every once in a while whenever I would walk back into the area his model would be exceptionally thin, as if it was squashed to half the normal width, only reverting once he teleported again.

Me, too. I was definitely zoning in and out a lot, in case that matters. He is currently stuck at the T in heart -- I assume at 75%.

Just experienced this. Malachai second phase at 1/10th health. Third organ not targetable. Health not reducing.

Same bug.
Cruel difficulty.
Last heart doesn't activate and boss is stuck a ~10% hp. I tried culling him, but it doesn't work. I used a lot of tp during the fight.
bug id:1283022292

Same here :(

Is this still a thing, because I'm having this same issue...

edit: I went back in the first heart was active so I was able to continue...