Seriously?! Fix this ASAP

If you are waiting in a lobby and you decide to browse your match history, the screen showing your match info still remains when you accept yes to enter a found match. When you are in the lobby you CANNOT exit that match history pop-up. I've had to wait a total of 3 hours because of this. Sometimes my champ select screen is blank and I cannot even select my preferred champ. Please fix this ASAP in the new client.