Jhin's W hitbox isn't what it seems?

I know jhin is already broken as he is but as an adc main who plays him alot as well as someone who watches a lot of Gosu streams I can safely say that Jhin's w hitbox is a off. His W mark isnt the hitbox but rather slightly to the side of it is the actual hit box is what I noticed. Not sure if that is intended but yeah kinda throws people off at times.