Champion List Shows one of my Friends Champion List

As it says above, whenever i view one of my friends profile tab (the one with the ranking) and then view my champion list, I can see what champions they have and at what champion level they are at as well as my champions. This happened to me about 3 times now and it is getting annoying. The champion list thing usually happens when I see their profile tab, then go to their match history, come to my profile tab and then view my champion list(but sometimes this just happens on it's own). There is a way to temporarily fix this until I come back from a game or re-log into League of Legends by re-selecting the current sorting I have on. I don't know if this only happens to me or I am just one of the few.