Yeah, right Ivory. I was still thinking about Regina and Mason's dialogue mix up. Only her dialogue doesn't change but quest data is saved so it's no much big of deal. But correction will reflect in upcoming patch.
I'm still not able to replicate the issue but you telling me that it happens mid way gave me some idea on where to look.
Edit:
The grabbing immediately thing did happen after I tried to move into it's direction. But animation interruption didn't happen because I already made changes in the code so I guess the problem is solved.
Thanks for specific direction on replication.