Killing a copper golem carrying an item will not drop the carried item

If you kill a copper golem while it is holding an item it took out of a copper chest, the item it was just carrying does not drop.

Steps to Reproduce

1. Assemble a copper golem or spawn one via spawn egg.

2. Put an item in the copper chest spawned via assembly or put an item in a nearby copper chest.

3. Wait for the copper golem to visually have the item in hand.

4. Kill the copper golem.

Expected Result

The killed copper golem dropped the item it was holding, returning the item to the player.

Actual Result

The killed copper golem did not drop the item it was holding, erasing the item from the world.