Duplication With Dyed Shulkers

Could possibly work in the betas but haven't tested it. I have also only been able to replicate it on servers/realms. How it works is that if you throw the shulker out of your inventory/place it as you pick it up, you will create a sort of ghost item that will disappear if you try to interact with it. Now if you then use the crafting menu and you turn that shulker into a dyed shulker it will disappear like it usually would. However once you click on the slot that the shulker should be in, it reappears and has the same items in it as the other shulker. I don't know if anyone else knows about it.