The bug
The dropping of scutes from armadillos appears to be a hardcoded item drop, rather than referring to a loot table as with just about all other item drops from mobs.
This affects both random drops as well as forced drops via brushing.
How to fix
Introduce one or two loot tables for armadillos dropping scutes - either one for random dropping and one for brushing, or one for both.
Linked issues
Comments


Considering similar issues have been fixed MC-267866 i think it can be considered a valid issue.

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This is fixed in 24w37a.
Can confirm by code analyzation of Minecraft 1.21 in
ArmadilloEntity.class
. I can also not find any loot table relating to this.Random dropping (
mobTick
method):Brushing: