While first part now works fine for groups then last part is really messed.
1. Both enter accoronian ruins, quest only counts for one, both go out the other goes first in, it ticks then.
2. Now you got 2 sets of everything, 2 sets of every mobs, NPC,s orbs etc.
3. When you reach the part where you enter the shadow fog then only one was able to enter the fog and get that quest part to update. (and note we still had 2 sets of NPC's and mobs there)