Zalmarath the Invincible Colossus is Back

Zalmarath the invincible bug is back. It seemed to have been fixed for a bit. But with this new character playthrough and now he is continues to get stuck and can't be hit for the most part, or when he is he takes a max of 4 damage. I noticed back in December when this happened it was worse for melee characters, with my monk I found a way to break the cycle before it was fixed, I used a distance attack of some kind. But now on my Warrior Commander he can't be beat as he just gets stuck and stays invincible.

Bug always occurs on the right side on the platform as it did in December and the only damage you do when you get a hit in is 1-4 damage, I think the game is giving him some sort of ridiculous accuracy and defense buff randomly but unsure as he literally just gets stuck into place and never leaves the side of the platform. Also happens always after he breaks the side of the platform.

If he moves from the right side then the bug has fixed itself, December force cycle break I mentioned. Though again that was my monk who had a plethora of options. So I can't remember what I did exactly. This Warrior build does not have those options. So basically this character can never progress until this is fixed.