Dupe Bug with pistons

[Krin37]

Minecraft's Version

Pufferfish version git-Pufferfish-47 (MC: 1.20.4) (Implementing API version 1.20.4-R0.1-SNAPSHOT) (Git: 9d12215 on HEAD)

Plugin's Version

2024.1

Describe the bug

You can dupe any content in a shulker, if placed on the central block, with a piston or using a minion from the plugin Jets Minions.

To Reproduce

• Place a Miner Minion in front of the oneblock
• Let it mine the block -> Central block gets bugged (disappears)
• Place a shulker with items where the oneblock should be
• Mine the block -> Items inside Shulker will be dropped, and a shulker with same items will drop too.

I discovered that you can bug the central block just with a piston:

• Place a piston to move the central block
• Place a lever or a button or whatever activate the piston
• Activate the piston
• Deactivate the piston -> Central block doesn't appear again
• Place a shulker with items inside
• Mine the shulker

Additional Information

2024-06-12_20-49-32.mp4