[Bug/Glitch] Disappearing Flopies

For some reason when I put a floppy in my disc drive for my key are door he floppy will disappear and is no where to be found. Other times it appears to have disapeared, by when I open up a disc drive or a chest it reappears in my inventory.

multiplayer or single player. this sort of bug is common when you have a high ping on multiplayer and isnt related to computercraft in anyway (and isnt really minecrafts fault either)