Ran into dungeon instance problems last night for AC Story Mode.
At first everyone in the group was getting an error message after clicking to enter with the popup(couldn’t connect to server or something along those lines). We then had one group member disband and go into the zone alone. We then invited him and the popup worked to let us in.
We got past the first named and one of the members had to go. So, I went outside to recruit one more while the rest of the group stayed inside. I invited a new member, stepped back into the zone, and was placed in a fresh instance with the new invite. Couldn’t get back to the other 3 in the original instance with the first named dead. Group ended up disbanding and we were all pretty disappointed.