PLEASE STOP CHANGING THE PAGE WHEN I'M EDITING RUNES!!

I don't know why this happens but i'm in the middle of changing my runes in champ select and then the system decides to change the runes because it stopped me for filling the page. This decreases the amount of time i actually have to pick the runes I want then ends up shoe horning a preset i really don't want.

It's annoying and if you don't want us to play with incomplete rune pages do change at the last 3 seconds or something.