[CLIENT] Unable to escape champion page

If you move your client with the X button of the champion info page off screen and open a champion page (clicking on the champion's icon) you cannot move the client and cannot escape the champion page. This can cause you to be stuck in the lobby of the game, unable to pick a champion, change masteries, or summoners.

How to reproduce:

1. Move the client far enough off the right side of the screen so the X on the champion info page will be off-screen.
2. Click on a champion's icon.
3. You are now stuck and unable to do important things, especially in a game lobby.

You can avoid this if you make sure your client is on screen, but if you're not paying attention, you could accidentally do it.

Fix: Make the client movable while in pop-outs like the champion page.