It's a minor bug.. Or at least I think so.
To do this glitch, you open up someone's donation chest and place your mouse over the item you want. Then, hold shift and click the item and at the same time press E to exit out of the chest.

The item appears in your hand. It's not actually there in your hand but it appears there and others can see it. If you attempt to use the item the item disappears. If you open any chest then the item disappears. I believe, but don't know for sure that the item still seems to be in the donation chest to other players. The item is not physically in your hand but, is shown to be so.

I am ashamed to say that I have known about this for a while but, since the server is currently offline I figured I should speak up. (In fact I almost got banned for showing this glitch to another player as a joke... *shamed*) I apologize.