[CLIENT] client dosen't appear after ending a game

(exploding nexus) i press continue, and the stats and client dosen't reappear. Its very annoying especially when i cant aoutomatically just press home and be back on the LoL client and when friends are waiting for you and you have to manually restart the client whenever i restart my client... I click on the 'Play League of Legends' and a notification appears saying "Another instance of the launcher is running. Do you want to terminate it?" i press "OK" and continue going on the patcher and later to the log in screen...I have to do this EVERY game.