So i was on my friends server which he made a 15w31a server and i tried placing down a sign and i got an error message and was kicked from the server my friend who is the server host also got the same error message and we were both unable to join the server until he changed the world. this is not a single player bug only multiplayer
I'm having this issue too. Would the error happen to be the same on in as in MC-83544?