June 2019
When I'm in queue and it pops where it shows all of the other people's classes who will be in your group, 9/10 it will show the opposite spec of who they are.
For instance; "Assassins" will actually be sorcs, "Sentinels" will actually be Guardians, etc
I came back from an almost 2 year hiatus about 2 weeks ago and I've had this issue since I came back. Anyone have any idea wtf is going on? It's getting pretty annoying.
July 2019
I haven't seen this issue myself before and I could not find any other posts on this. I would try running a repair as per this guide here and see if resolves the issue.