Karolak isn't spawing to talk in sorcerer sanctum and i have done the dungeon twice already with help it only show the arrow were there at
You need to go in on your own (don't go in with anyone who has done it before) and do the speaky stuff. When it comes to the battle they can port to you or you can go out and enter together.
It glitches there for people doing it the first time because it is repeatable so sets up the battle for those re-entering. It won't let us talk though and just points to an invisible spot.
PS. You do the talking BEFORE the battle. When you fix the medallion and put it on the pedestal she turns on us and spawns as an enemy...at that point either port your team in or exit and come back in together
It only messes up when someone in the team has done it before.