could not change rune page

in lobby for aram, tried to pick my tank rune page as i was previously useing my katarina rune page, it would show the name of the tank page but when i go to edit the runes it was the kat page. and i tried switching pages multiple times. did not work. once in game.. i had the kat page, despite picking the tank page. so now i might lose because of this. but its just aram right? whatever. plz fix this bs