Orianna Bug

I feel as if Orianna's ultimate mechanics has been altered recently because the interaction of her ult with enemy champions feels clunky and unpredictable. The ability description reads 'toss enemies in the direction of the ball", but upon using it seems to toss them all in random directions. I'm not sure if there was an update to Ori's ult that I just missed in the patch notes or what, but any feedback would be greatly appreciated. Thank you.