Editing runes during champ select resets when loadout starts

If you're editing your runes during champ select and the timer reaches 0, when it switches over to the loadout timer, the runes you're working on reset without saving and if you're on an invalid page, it goes to the next rune page.

There's no valid reason for this, since this never happened with masteries in the old system. It shouldn't jump to the next valid rune page until the loadout timer has finished counting down. Rune pages should be independent of the champ select timer.