I would like to add that this exact same problem is also occurring in ‘shape of the spirit’ (the quest that occurs at the same stage of the personal story, but for a different choice at the previous step)
I do not get any moonwalking sons of svanir, but there is one Svanir Hunter (I’ve only tried twice but it has been the same guy both times) that doesn’t turn hostile with the rest of them, leaving me unable to complete the quest.
I see that the devs are aware, I just thought I’d add my encounter with this particular kind of bug to the list.