So, here I am fighting Alduin at the Throat of the World with my Generic McEvil character.

Once he's half down, a small tribe of Rieklings run up to me and begin helping me slay Alduin. I didn't bring any Rieklings with me, in fact, I had Serana and a Steadfast Dwarven Sphere with me to gun him down.

Anyway, Alduin dies, and the Rieklings scream there victory screeches and all. And then I leave to catch Ohdaviing.

I come back after slaying Alduin in Sovngarde, and what do you know? They are still there, dancing, oblivious to the 5 or so dragons flying about and screaming.

It's not a bad bug, Rieklings traveling from Solstheim to fight dragons with me and then staying there, in fact it's useful and humorous, but I thought I should bring it up.