pool party lee's Q can be seen through fog.

I was playing Volibear, and I went to invade enemy Lee's red buff. As I walked through the area in front of the Chickens, I was able to see the dim animation of Lee's Q projectile in the fog inside the red pit. I had no vision over the wall, I had no vision of Lee himself, just the dim projectile of the Q....but now I had an advantage because I knew he was there.