Personal story, Priory path level 51 mission “The Ghost Rite” gets stuck on the second objective, to enter the Ritual Circle. No location is indicated on the map to enter. A friend and I both made the same mistake repeatedly, and a google search led us to believe this story was bugged—it is not.
There is one circle on the beach, a statue with circle platform, and a second made up of NPCs just to the right of your starting location. The NPC circle is the one you’re intended to enter, but if you go to the beach the mission appears to continue as if it should, all the way up to and including killing the boss. It needs to be made more clear to the player that they should enter the “ritualist’s” circle, instead of the “ritual circle” which could be interpreted to be the statue-like circle on the beach.