Caitlyn: ZERO DMG! Auto Attack Bugged Found Out Now

In all the games I've played as headhunter Caitlyn (not sure about the other skins but this only happens when I play Caitlyn) when I try to auto attack, it switches between these two things: A normal auto attack that does damage correctly and an auto attack that registers but does no damage. It hasn't been consistent to doing either one of those, it would switch between the two randomly (with the auto attack that registers but does no damage being more rare) making it difficult to accurately cs or poke or engage in a real fight. This happens with Caitlyn only. This is a serious issue and I hope Riot will take notice. It is very annoying and ruins the game-play when you see the auto attack pellet shoot and land on the target but does no damage. I assure you this is not lag and only happens when I play with Caitlyn.