Caitlyn auto attack bug

I just got done playing a ranked game as Caitlyn. And throughout the game I noticed there was a bug with her auto attacks. Every now and then she would deal instant damage before the attack animation even finished. I wanted to make this bug known to Riot so you guys can work on fixing it. Sadly I don't have a screenshot to prove it, because it happened too fast to take a picture of. If you need proof of the bug, you can test it out.