because you aren't controlling the character /facepalm
Anyway, I hope they fix it in a day 1 patch or something
You're not controlling the characters (especially not in spinning around in circles) in conversations either. At least, the "full conversations' that are cinematic. The conversations that you still have player control over won't do this. At least they shouldn't, because the cinematic system isn't taking control.
This is done mostly because the animation system can behave oddly for complex animations if something happens that causes them to be updated asynchronously. So we synched the two during cinematics to work around this issue. Fixing the problem would be a lot of work, and likely won't be patched (definitely not day one) unless other, more serious issues end up manifesting as a result of this system.