Maintenance for the week of October 6:
• [COMPLETE] ESO Store and Account System for maintenance – October 8, 2:00PM EDT (18:00 UTC) - 6:00PM EDT (22:00 UTC)
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.