I play on a realm with me and my friends, that ive owned for a year and a  bit, It doesnt let us use any anvil properties (including nametags). It also deletes all text that is written on signs. (no players are able to see it). No players are able to see chat. Only by using /me, or /msg.  And the same thing happens with books and quills. When you close the book after writting in it (wether you sign it or not) and open it again, its completely empty. 

This glitch is really aggravating, we have no way of communicating in game, and it really ruins the gameplay experience. I really want this glitch to be fixed, its my least favourite of all time!