My most recent battle with the Abyssal Remnant was really buggy. I did the standard shield then switch to daggers strategy. After the boss jumped out of the acid pool, in the wrong direction (opposite from where I was standing), it’s body swung around the platform to stop right on top of my character. After this when the boss went back to the pool it just stood motionless in a perpetual heal lock so it wasn’t possible to do lasting damage to it. Not that I could have since I only had blunted arrows anyways.
So with no other recourse I exited the sewers through the back/boss exit.
Then I looped back around and started the dungeon over. This time when it was time to fight the Abyssal Remnant the same events unfolded. The worm came out at the wrong point. Then it’s body swung around to stop on my character. Only this time it did not get stuck motionless and I was able to complete the fight. Albeit with the Abyssal Remnant coming out of the acid pool at the wrong spot on almost every occasion.
I really think this boss fight needs attention. As does the Witch Queen if it hasn’t been addressed yet.