Cloning Active Flying Machines Causes Blocks to Disappear

The video includes full reproduction steps and shows the bug in action. The screenshot showing the unexpected clone behavior.

Steps To Reproduce:

1. Create a new Creative world with default settings.

2. Build a simple flying machine using 2 sticky pistons, 2 slime blocks, and 1 observer.

3. Use the command '/clone' to clone the flying machine using the format: /clone <x1> <y1> <z1> <x2> <y2> <z2> <x> <y> <z> where x1 y1 z1 are the starting obsidian corner coordinates, x2 y2 z2 are the ending obsidian corner coordinates, and x y z are the clone destination coordinates.

4. Activate the initial flying machine to ensure it operates correctly.

5. Once the machine is flying, enter the /clone <x1> <y1> <z1> <x2> <y2> <z2> <x> <y> <z> command that was executed above.

6. Walk through the area where the parts disappeared for the cloned flying machine.

Observed Behavior
When a player clones a flying machine in Minecraft, certain components of the machine may fail to replicate correctly, resulting in their disappearance. Specifically, parts of the flying machine, such as pistons or slime blocks, may not appear in the cloned structure.|

Expected Behavior:
When cloning a flying machine in Minecraft, all components of the machine should be duplicated accurately without any parts disappearing. The cloned flying machine should function identically to the original, allowing players to interact with all blocks within the machine's structure as intended.