[Gameplay] Zac's E doesn't refund half its cooldown or cost anymore

I've been playing Zac recently and deciding when to jump is a critical point of his kit. And deciding not to jump really shouldn't be punished with a 10-20 second cooldown. The ability states that if you move while using the ability half of the cost and cooldown is refunded, but that isn't happening anymore for some reason. I don't know if it is happening to just me or everyone, but when you mess up the direction because you're facing the wrong way and have to wait another 10 seconds before you can really do anything can easily lose you games.

Would help if someone would confirm my findings, no one I know seems to play Zac too much.

EDIT: Went to check real quick, half of the cost isn't refunded either. That's easily around 75 health lost in the late game if you have to back out.