Zombies not spawning with shovels

[iwanttocompilebutidk]

While using the starter pack one block, i noticed that only 80% of zombies spawned manually with eggs or commands spawn with shovels. But when they spawn naturally, the odds seem to be the same as vanilla minecraft.

[BluePsychoRanger]

There's no way for a datapack to differentiate between a mob spawned naturally and one spawned by an egg or commands, so I'm not sure how that'd happen.

[iwanttocompilebutidk]

Idk mb im very unlucky ig