I don't know if I am in the right section here, but I think so =).
So, I played Yasuo yesterday, with the "High Noon Yasuo" skin.
Usually, when you succesfully hit an enemy with your Q 2x, you are able to "summon" a whirlwind.
To here, everything is ok. But:
The sound works, but the animation doesn't.
So you heard the sound, but there was no animation that you are able now to summon this whirlwind.
(I mean the animation, that a little whirlwind surrounds you)
If you don't know what I mean, here is an example of the animation (from 01:13 - 01:16):
I hope I helped!