100% reproducible and game ruining bug in champ select

Runes displayed in champ select are not the actual runes selected.

I played Nasus last game, and selected my rune page named "Nasus", I had a bad game and closed the client. I came back a few hours later, logged in, and my selected runes displayed Vayne. I locked in Vayne, and got to play a game with my Nasus runes.

Here's a video of how broken this experience is: https://www.youtube.com/watch?v=cfcrj7fAOSw&feature=youtu.be

There are multiple select boxes "checked" in the dropdown. This should not be a multiselect, and the behavior should not be this unexpected.

I can not have the Vayne runes selected until I select a third Rune page, and then re-select the Vayne runes.

Clicking edit displays the currently selected runes, but doesn't pre-fill the Rune page name correctly until after you switch your currently selected rune page.

If this is the intended behavior and not a bug, simply reply to this post stating that this is the case and I'll go ahead and uninstall your game.