Annoying bug...

So I was playing today...Decided to go ranked...went ziggs mid ...and something was off...I couldn't use my keyboard... like when i clicked QWER DF or 123456 nothing happen, I had to actually click on the ability picture on the bottom of the screen and then i could use it like normal, but after awhile this got SUPER annoying, me and my team had to surrender, I though maybe it was just a really bad bug, next game after that it happen again! I had to leave the game! I didn't want to go through it again...anyone else with this problem of not being able to use you're keyboard?