ALL champion masteries reset to zero

It's a display bug. Mastery emotes still work fine in-game.

So did mine. I still saw my mastery during the loading screen.

Mine did too but my mastery score on my profile stayed the same.

same for me

I have the same issue too are we getting a hot fix to these bugs

same here :(

Same here, says zero

Also if you switch between ''recently played'' or ''alphabetical'' it doesn't change

Edit: there's a note in the client saying they are aware bla bla :p

So did mine. please fix this I've spent so much time working on all my mastery 7s

Same problem, can see masteries level in profile but not in collection

If only it meant I could get chests again for champs with whom I already got one lol.

It's a bug with the champion collection. It happened to me as well. Really annoying since it doesn't display any champion mastery data at all.

I swear people dont read whats on their screen... Theres a notification that says that they are fixing it.

Same issue, also stuck in alphabetical mode, can't use recently played or mastery views.

YUP YUP I thought the new season came in sooner xD.

It is fixed

its jsut happens sometimes when you click collection you can generally fix it by clicking profile then going back to collection

Same, on my profile, collection and in game it isn't there. ._. I hope this is a bug...