[Bug] -the inventory still has the same blocks after you leave a plot

[Syntaxyou]

Description

You can duplicate the Netherstar, but the copied Netherstar is not droppable.

Steps to Reproduce

1. create a plot
2. copy the Netherstar with mousewheel
3. You cant drop them, and it doesnt reset

Possible Solution

clean the inventory when you join, than add the Netherstar