Champion Select Bug

I was terribly disappointed due to encountering this bug. I was in champion select trying to fix my masteries and supposely scrolled over a champion and it was on the right side of the screen blocking the exit button to close my masteries and the champion's image would not go away and it was annoying and was forced to dodge due to "not selecting a champion" and I lost LP due to this glitch and hope to have it fixed ASAP.