I can’t believe that this is STILL an issue, even after a whole year. It happened trice this week and frankly I don’t have the patience for bugs like this anymore…
The way I see it there is no solution around this issue but to restart the whole path. Usually it doesn’t bug when you finish it fast and then teleport but I’ve noticed that Tzark may get stuck depending on the order in which you destroy the burrows (this might need more testing though, but that isn’t hard because this bug pretty much happens once a week) because he follows the players around.
I really hope this get fixed, because at this point it has become plain annoying.