Ezreal AA cancel even though the shot is fired and hit it's target

So, it's possible to cancel Ezreal's auto attack mid-air, so that the shot is fired and hits the target but the damage is negated. This is a bug, right? It's happened to me with both the Frosted and Arcade skins. It happens when you orbwalk IMMEDIATELY as the animation finnishes and can be prevented by waiting milli seconds before inputting the move command, but still, it's very anoying.

I don't have a video of it, but it happens once or twice every few games (sometimes with cs missed, trades lost etc.) so I'm sure other people have tried it aswell, and it'd be swell to have it fixed. :)

PS: Just to clarify: I'm not talking about regular AA cancels, I don't have a problem with that. The problem is when the shot is fired but no dammage is applied because of a late cancel, which seems wonky and anoying.