[GAMEPLAY] Nasus' Q doesn't go off properly

So sometimes when i want to stack a minion with Nasus' Q, the minion just dies when the animation starts. But then it gets canceled, removing the empowered basic attack effect and going on cooldwon without being able to hit.

1. Play Nasus
2. Q a minion that is just about to die

I pretty much get this bug every game I play with Nasus up to 2 times per game