BUG WITH NEW CLIENT UPDATE 7.11

I was in a ranked game lobby and we were doing our 5 bans and I clicked on a champion to ban but i was able to click on on the picture of the champion but not press the ban button and the whole client kinda froze and the timer went to 1 sec and stayed there for about a minute until it unfroze and told me i didn't ban and need to wait 6 min to go back into the game. This is so annoying because similar bugs have happened to me. pls rito fix this. i dont wanto get banned for something thats not my fault