Orianna ult+ball on someone bug

When you attach your ball to someone else than you, he is moving in some direction and you ult, the ult is casted in the place where he was in the moment of cast, instead of ult being centered at ball bearing champion. Interestingly enough, when you have ball on yourself, this wont happen (tryed it with ult + flash, not 100% sure about movement)

You can clearly see the problem on the video.. center of the ult is were Braum was standing half a sec ago, isntead of being centered on him.

How to reproduce:

1. Attach ball to someone
2. let him run in some direction
3. Ult

Upvote pls :)