Creative Items in Chests keep disappearing

So,

I put lets say an inventory full of heads and I just do a quick drop off. Right after I leave my plot (out of the chunk). The items I have just put into the Chest disappears. I tried it with other chests and it has done the same thing. I don't know why I am having this problem, it is almost like the plot doesn't save it in there when nobody is in/near the chunk. I don't know why the items disappear, because it is not just Heads that disappear.

 

Um, I have no idear. I have noticed that some items I duplicate with the scroll button disappear after an unknown amount of time.

 

Im not sure...
But I think this happen to me once or twice...
I put a few heads in my chest, then I left...
When I got back to my plot, only some heads where missing.

 

Oh that might be why, since they were duplicated.

 

Closing this for inactivity.
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