The Bug
The new Mace doesn't break Decorated Pots into bricks unlike the other tools
Reproduce
Get a Mace
Place a Decorated Pot
Break it with the Mace
Observed Result
The Decorated Pot broke itself
Expected Result
It would break into bricks/sherds
Note
This is because it is not part of the tag #tools tag which the tag #break_decorated_pots uses as a reference
Can confirm.