Short description:
Copycat things don't emmit light properly (when applied with light-emmiting blocks) after a world reload.

Steps to reproduce the behavior:

1. Place any copycat thing and apply a light-emmiting block to it.
2. Exit the world.
3. Log back in.
4. See error

Expected:
I expected the said blocks to continue emmiting light.

Screenshot:

(After reload of world; The second is a Copycat Block)

Desktop:

• Minecraft Version: 1.20.1
• Mod Loader: Forge 47.3.0
• Mod Version: 1.3.8

This is a create issue and sadly has been for quite a while now.
Also a duplicate of #52