The Item BUG

On Miniblox when you get an item in creative and just lose it and then try to get the same itme again it says zero and when you put it in your inventory it looks normal but when you click it when its in your hand it dissapears into thin air and there is a glitch where people are duping in servers which is really bad because it makes the game really laggy then when you play and a lot of people just give out stuff to other peopl and then they start to dupe which then makes the servers MORE laggy.