This is pretty simple to explain and reproduce: Dollies stack, and if you pick up a chest (or anything with an invetory that the dolly can pick up) with a stack of dollies, you can split them into individual dollies, each with their own copy of the chest, complete with inventory.
I guess a simple fix is to make dollies unstackable. A workaround for now is to disable the dolly in the config, which is what we did on our server after some crafty players found out about this one.
This is pretty simple to explain and reproduce: Dollies stack, and if you pick up a chest (or anything with an invetory that the dolly can pick up) with a stack of dollies, you can split them into individual dollies, each with their own copy of the chest, complete with inventory.
I guess a simple fix is to make dollies unstackable. A workaround for now is to disable the dolly in the config, which is what we did on our server after some crafty players found out about this one.