Same, can confirm. Was trying to clear the zone & do all the quests etc. Ran this particular quest twice now, but door won't open and anything killable's dead -- yet I'm stuck at the "escape the mine" part. Ran out the front & it's like we never went in yet. WTF

Submitted a bug report in-game with screenshot of the empty mine.

Yes, it's March 2025 & still BUGGED.