Dunkmaster Darius Autoattack bug

Hey guys, i have a problem everytime i try to play Darius. I have the dunkmaster darius skin and everytime i press e or w the autoattackanimation doesnt work. The champion just tries to move under the enemys location and he doesnt get damage.

I hope i'm not the only one with this problem, because i really like this skin.

I Mostly play him on Twisted Treeline but i dont know if this bug is on Summoner's Rift too.

Thanks for reading, cya (: