Draven's auto attack canceled after animation

It's happened to me multiple times and i've shrugged it off, but the last game i played it played a crucial part in our victory. When attacking the enemy who was low enough that i could breathe on them and they'd be knocked out I made the mistake of flashing and auto attacking only to see the animation of the axe and started aiding my teammate with an additional opponent only to later discover that my axe had been canceled half way through the air. Not sure if it's happened to others before, but i thought i'd start a thread so hopefully it could be patched (It was a powered axe so there's no way it wouldn't have killed him since he had a sliver of health left)

Disclaimer: It tilted me pretty hard so my focus on the game wasn't my best