I went in to a draft game and edited my masteries in the lobby while the other players where banning. I cleared the entire mastery page and made my new ones.. But when I was done I couldn't exit out of the masteries and therefore I couldn't lock in my champ.. I think I forgot to save the masteries.
https://gyazo.com/849163d7f5b639457c7f526956843736 Here is a screenshot
wonder how many people have to post about masteries glitching before they fix it. masteries are a huge part of the game
I have had this glitch as well as the mastery page 'freezing' after clearing one stone. You can get out to your champ but you can't add mastery points to anything...basically forcing you to play the game without mastery keystones.
Just got this problem
