Unable to advance Forgotten Depths dungeon due to missing prisoner for objective

First section of dungeon asks you to free 6 prisoners. Only 5 found. Map completely discovered and uncovered until the “door” that blocks me from progressing.

Same. I just spent over 20min post-clearing the dungeon, combing room by room and not finding the prisoner. I’m thinking one of the objectives didn’t register because I was interrupted by an enemy right before it finished the first try. Unfortunately I hadn’t recorded so I can’t verify.

Aaaaaand… me too. Pretty frustrating. :frowning:

Yup, a week later. Still a problem. T_T