I first noticed this bug in Singleplayer whenever I would close a chest there would be an error message (Think is was something like "(Error) Error message[errorrept1], something like that) but after that, everything was like nothing happened.

Then once I finally learned how to join a server, I wanted to play some survival games on "play.bladestorm.net". But for some reason after closing a chest the error would appear and I couldn't open any chests no matter what I did. I even tried breaking the chest but that just crashed the game. I also saw that although I could move around now the chest was still in it's "open" state. Not sure if this is the server's or Minecraft's fault but I really want this fixed.