When you’re supposed to choose between siding with the Mages and Templar, it tells you to go back to the war room, which I assume should activate some kind of cutscene…but nothing happens. You just get to choose more missions on the map. I can’t tell how far back it bugged out, even if I go back to before starting that questline, I get the same issue.

From the steam forums, it seems like this has been a known bug since at least the original steam release :/