Champ Select Champion Tile

No link, hard to replicate the bug it's pretty random and I got no screencap when it happened. When in champ select and you're mousing over the champs the champion tile pops up on the side showing their splash and their name etc., sometimes this tile glitches and stays up after the mouse has passed over the champion. This itself is the bug and isn't really gamebreaking or anything and can be fixed with a wiggle of the mouse over the champions available to choose. However when this bug happens and you're fixing your masteries, you can not exit out of the mastery page upon finishing. This means if you haven't already selected your champion you dodge the game, not too bad for a normal game, kinda frustrating for a ranked game, and a kick in the nuts if it's the last game of your series.

Like I said not a HUGE deal but I did recently get kicked in the nuts by this, so here I am bringing awareness.