Eerie Mojang party inventory getting flooded on ideas vault with undroppable items.

Apparently, upon joining ideas vault there is a chance you will get into a server that had duped locked items dropped into the floor, therefore locking out your inventory completely. This makes you unable to finish day 4 and day 5 tasks, as the dev hat and a lab coat appear on your inventory. Could be probably solved by making them appear straight on you?