Caitlyn Autos Dealing Zero Damage to Inhibitor

I was playing Caitlyn in a match today went I notice a rather huge glitch. As I went to backdoor the enemy team's Inhibitor in the bottom lane, my auto attacks completely failed to do any damage to the inhibitor. I repeatedly tried to attack the inhibitor multiple times and my autos continued to not damage the inhibitor at all. My autos were clearly hitting the inhibitor over and over again, but the inhibitor did not receive any of the damage from it. I wasn't canceling the my animations as I stood still and let the autos repeatedly shoot and impact the inhibitor. This should be looked into as soon as possible. I will help in anyway I can. Let me know asap.