During a multiplayer session, the visitor places down a bed.  Everything is fine.  

Everyone quits, and the next time the world is loaded and others join, the bed is invisible and does not function properly.  If you try to break it to collect it, this causes the game to crash.  

So far the only way I found to get rid of this problem is by exploding the invisible bed with TNT. However, the bed has turned invisible multiple times.