Interesting Jhin Mechanic

So I hoped on the training mode to practice Jhin a bit and flash over some walls. I was testing Jhin's W and Flash and it has an interesting mechanic to it. The moment after you start the animation if you Flash Jhin will move and face the direction of the Flash. His W however will not move and will shoot in the line no matter what. Game play wise that means you could start your W and then Flash out of the way of an incoming projectile while still hitting your target.

I was trying this because I thought it would move the W but it doesn't.