Hi, I just spoke to someone at Ubisoft and they suggested posting here as they can't find any solution for the specific bug I have. I'm at Chapter 1 of War in the North, in Halfdan's room in Donecastre, and I'm unable to speak to him or trigger a scene, though he has the floating Quest/Celtic Knot above his head. He just paces with his dog. I've reloaded older games, closed the application, rebooted the PS4, etc. I've retraced the steps going back to the cliff where I'd spoken to Faravid but nothing helps. As far as I can see, as soon as I enter the room or get close to him, it should have this happen: "As you arrive, a scene will play to complete the quest." So, story and game are stopped cold until fixed.
I’ve been having this same issue for a while. When I contacted support they basically said there’s nothing they can do. I’ve completed almost the rest of the game and there has been no change in the Halfdan issue. It’s really frustrating. It may be time to give up on the game.