Multiplayer sign glitch 'cencured'

On other players Minecraft xbox 360 worlds, I cannot read their signs as they all say censured (x4 to fill up the sign) I have told my friends on the xbox and they are having the same problem- I know it's nothing to do with parental guidance so im not sure why its happening. It means we can't communicate throughout the game. Please try and fix this bug asap. Thank you!