Copper golems holding items can be oxidized into statues and resurrected to duplicate items

Steps to reproduce the issue:

1. Place an oxidized copper block and a carved pumkpin.

2. Place any item into the chest and wait for copper golem to pick it.

3. Wait for the copper golem turns to the copper status and drops its item.

4. Use the axe to restore a copper golem.

Expected result:

The copper golem droped its item after it turned the copper status, restored by axe and the copper golem is nothing in its hand.

Actual result:

The copper golem has its item after it restored by axe.