Bugged Runepage Selection And Runepage Settings

At the moment I own 8 runepages, named "Base AD, Base AP, Base Support AP, Base Support Tank, Base Jungle, Soraka, Yi, Empty_1". But it seams that the runepage that is at the 6th place on my list (no matter how I sort them) will create the following szenario:

.)I can't change anything in the Runepage as long as it is on the 6th place of my list. If I put it on another possition thow I am able to. .) If I try to switch #5 with #6 it results in a backswitch of them. .) During champ-selection, runepage #5 and #6 are named the same (they are both named as #6), the original #5 vanishes. And i can't select any ot them two, I always jump automaticaly to #1 of my list.

I already tried to repair my client, but without any result. May anyone know the issue for this?