Entities That Spawn W/ Equipment Can't Have Their Equipment Changed

[KristenStuffs]

Version: 1.21.8

Entities that spawn with equipment such as Skeletons cannot have their equipment changed at all (unless they're apart of another mob as a passenger such as the Ghostly Horseman).

If we take Bob as an example, Bob works fine as zombies can't spawn with equipment.

group(type=difficulty,ID=hard;type=entity,ID=zombie,NBTTag=(
    equipment=(
        mainhand=(id=diamond_sword,count=1,components=(enchantments=#luckySwordEnchantments)),
        feet=(id=diamond_boots,count=1,components=(enchantments=#luckyBootsEnchantments)),
        legs=(id=diamond_leggings,count=1,components=(enchantments=#luckyLeggingsEnchantments)),
        chest=(id=diamond_chestplate,count=1,components=(enchantments=#luckyChestplateEnchantments)),
        head=(id=diamond_helmet,count=1,components=(enchantments=#luckyHelmetEnchantments))
    ),
    drop_chances=(mainhand=0.5f,feet=0.3f,legs=0.3f,chest=0.3f,head=0.3f),
    CustomName=(text="Bob",color=blue,bold=true),CustomNameVisible=true)
)@luck=-2

However, if we replace the ID=zombie with ID=skeleton

group(type=difficulty,ID=hard;type=entity,ID=skeleton,NBTTag=(
    equipment=(
        mainhand=(id=diamond_sword,count=1,components=(enchantments=#luckySwordEnchantments)),
        feet=(id=diamond_boots,count=1,components=(enchantments=#luckyBootsEnchantments)),
        legs=(id=diamond_leggings,count=1,components=(enchantments=#luckyLeggingsEnchantments)),
        chest=(id=diamond_chestplate,count=1,components=(enchantments=#luckyChestplateEnchantments)),
        head=(id=diamond_helmet,count=1,components=(enchantments=#luckyHelmetEnchantments))
    ),
    drop_chances=(mainhand=0.5f,feet=0.3f,legs=0.3f,chest=0.3f,head=0.3f),
    CustomName=(text="Bob",color=blue,bold=true),CustomNameVisible=true)
)@luck=-2

It spawns with an unenchanted bow.

This has been tested on multiple mobs such as zombified piglin, wither skeletons, vexes, vindicators, and a few more all of which did not spawn with enchanted items.