I expected the "Off You Go" advancement to pop when I spawned a Friends & Foes Copper Golem. Instead I got "Golem Palette" from Everything is Copper.
I checked the githubs for both your advancement and the Friends & Foes one. Both jsons clearly state which golem is being spawned, and they both do spawn, but the advancements are conflicting somehow. The other odd behaviour is that your advancement is appearing where theirs should be.
Reproduction Steps
- Spawn Iron Golem (to make the path for the Everything is Copper Golem advancement.) Get "Hired Help" advancement.
- Spawn Everything is Copper Golem. No advancement.
- Spawn F&F Copper Golem. Get [Golem Palette] advancement.
- Attempt to grant the F&F advancement with command. Get message "Couldn't grant advancement [Golem Palette] to Kezmodius as they already have it.
I have reported this to Friends and Foes also.
Faboslav/friends-and-foes#425
You can see some images there.