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.
Wlam1 voteshttps://gyazo.com/849163d7f5b639457c7f526956843736 Here is a screenshot
SatedWukong 1 votesYa it just happened to me again. Really freaking annoying cost me a game.
Setfrees1 voteswonder how many people have to post about masteries glitching before they fix it. masteries are a huge part of the game
jeseil1 votesI 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.
BoomerB521 votesJust got this problem