Jhin auto attack

Not sure if this is a bug or not or if it's just really annoying, but 's auto attacks sometimes does the animation where a shell is released from the chamber of his gun, but no shot is actually fired so I miss cs or kills on champs. I realize it's not that big of a deal, but it's kind of misleading when you see the shell escape from the gun, but no shot is actually fired.

Thanks.