Using CTRL + Pick Block on a container with items inside does not copy its data

Summary:
When CTRL + Pick Block is used on a chest, barrel, dropper, or dispenser with items inside, the container is copied and has the "(+DATA)" text, but when the container is placed and opened, it has no items inside.

Steps to Reproduce:

1. Place a chest

2. Put an item in the chest

3. CTRL + Pick Block the chest

4. Place and open the copied chest

Observed Results:
The chest is empty.

Expected Results:
The chest should have an item inside.
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