[Client] keep getting kicked

This is obnoxious. I'm in champ select and i go to another site to browse builds, browsing the internet and what not. After a minute i go back and it says i got kicked. Can you guys please fix this and make it so when it's your turn to ban/pick, the client pops up on the screen? I lose unnecessary lp from this and have to wait to get back into matchmaking. Sorry, I don't care to watch bans or anything when i'm one tricking anyways. Cheers and thanks!