I reached the fight against 4 aesir in Asgard. Since Ylva is free I go to see what her father would say about it. When I return the NPC I was supposed to talk to following the fight is gone. I can't receive the next quest. The way is open but the quest might be bugged.


Quiting and going back into the game didn't fix it. However I then went to see the next NPC and everything went as it would if I spoke to the first one. In the quest log bringing up dialogue gave me the information I should have received. Hopefully that means that everything is fine now.