[CLIENT] Masteries not updating

So I'm in the client and I'm setting up masteries for champs that I like to play. I noticed this bug in the champ select before the one shown in the picture, but as you can see on the main page (where to select the masteries) there are 8 pages there but when I pull up the editing screen there are only 5. In the first picture I had 10 pages total, and I couldn't scroll down or anything it would only show 8 of them. This is annoying because I can't make masteries for people that I don't normally play on the fly, please fix.