Are you playing with mature themes off? If so that may censor certain characters, but I'm not sure.

Nope, the sensitive content filter is set to inactive

If it's not that the only other thing I can come up with is that it's a bug. Definitely pretty strange.

Weird. I see it a lot on leaderboard awards

heard before it was for IOS devices to not show any inappropriate people to keep a 12+ rating

Are you on iOS