Describe the bug
When activated, the advanced jackhammer drops serveral copies of itself along with the mined blocks.

Steps to Reproduce

1. Build an advanced jackhammer.
2. Activate it.
3. Mine.
4. Profit !

Screenshots
Look at all these advanced jackhammers !

Environment (please complete the following information with the version):

• Minecraft: 1.16.2
• Mod Loader: fabric

Do you have Allure?

Yep. And I just noticed that this does not happen in my "debug" setup, with only TechReborn..

I suspect you're encountering this conflict: https://www.curseforge.com/minecraft/mc-mods/allure/issues/3
As of yet it's not solved.

Fixed on Allure side