There are really no steps to reproduce this, it just happens. Champion portrait gets stuck on the screen and won't go away. In this case, i opened my masteries and couldn't exit them, forcing me to dodge champ select because i couldn't select a champion. This bug is very frequent and I'm not the only one that gets it but nobody seems to ever address it on the forums.
this sux you just learn to deal with it if you enter a custom and hover over a champ should fix right away then you can click that quit button which is only available in customs OR you can enter tb which and hover over a champ then go back to your blind draft or ranked game
EDIT: oh my bad just saw you didn't leave Que which is how this normally happens the X button is still there its just behind the champ splash (it also doesn't change your mouse icon so click away)
