I encountered a player today that I could neither mute nor block. Was horribly toxic and made my game really un-enjoyable. I muted the person in game, but then I was still able to see them type for some reason. Then in the end game screen, I was unable to block them. I thought maybe my block list was full (is that even a thing?), but then I unblocked a couple of people and still couldn't block the person. Anyone else experiencing this?
I did have trouble muting 2 players in the 1 game I tried. had to hit the mute button several times when I noticed I could still see there comments.
cant comment on your issues blocking players
i've run into the same blocking problem a few times in the past, what i've done to fix is just write their username down in a skype chat or somewhere, then the next time you get on league then try blocking them. sometimes it just doesnt work but a day later or a few hours later it works perfectly fine. good luck 
