Kalista ult bug

I have been playing a few matches as Braum, supporting my Kalista friend. Things have been going swell. I think in total we have played maybe 3-4 games together as this combo, and everything works well together, as I am just a large, locked, door to Kalista.

Then I played a game last night, business as usual, ripping up a bot lane with what I assumed was a new player. Feeling a little bad about it, but still enjoying doing well.

Level 6 rolled around and then stuff started going wrong. Out of the seven times my soul was sucked into Kalista, three of them resulted in me flying the opposite direction as designated by the cursor. This has never happened before this one game last night, one out of four games, three out of twenty ultimates.

TL;DR- Kalista ult sent me wrong direction three times in one game. full game here http://youtu.be/zA8_O3QBSmY