When I entered the southern dwarven kingdom, beat the war machine and watched the event with the northern dwarf lord, after I tried to exit the inn, the scene where the northern dwarves attack suddenly started, meaning I had to do the northern battles with just Dominus and Mercury (fun.) Afterwards, the scene with the northern dwarf lord repeated with Dominus invisible. After resting at the inn and saving, the game seemingly went on as normal.
Viewing post in Oriel and the Black Knife...v8.1 comments
Oh for the bug above, it is caused by entering the southern dwarf city in the South West. For some reason there are two that can be entered almost certain that is why the scene plays twice. The player is supposed to go through the top one I image (NW). I confirmed this and by going through the NW one I didn't run into the bug but I do still get the blocker if I leave through the region via the East Bridge.