[Gameplay/Client] No Mastery Saving
If you're fiddling with your masteries at the last possible second, VERY often you will get locked in with 0/0/0 masteries instead of anything at all. This is insane as the save button is usually grey'd out and it indeed DOES look like you've saved them. At the very least, I'd highly suggest just setting the player's page to a random allocation of mastery points that takes a keystone. Hell, for the first pass, you could even just say "this is our default, 18/11/0. If we detect you enter the game with 0/0/0 we will assign you an 18/11 page that takes (blank) keystone". The odds of players purposefully gimping themselves of masteries is slim to none. I think this is a favorable change until you guys get your new client bugs worked out.