Malphite's first W Hit Animation needs to be slowed down ever so slightly
The animation is just fast enough that if you are orb walking, you can play the entire animation complete with the sound effect of hitting the target, and still be able to cancel it in between that animation and noise and actually doing damage. Luckily this doesn't consume the first hit on his W, but it's incredibly jarring.
On a related note, I'm curious about any other champions with inconsistent Auto Attacks like that. Maokai's Passive is just the worst, for example. And now that Attack Speed Garen is a thing, it's starting to show off how silly his Q can get.