The Bug:

The soul speed enchantment doesn't function on horse armor.

It's important to note that thorns, curse of vanishing, and feather falling enchantments continue to operate as expected.

Steps to Reproduce:

1. Summon a large area of soul soil along with a horse wearing diamond horse armor enchanted with soul speed 3 by using the commands provided below.

   /fill ~1 ~-1 ~1 ~15 ~-1 ~15 minecraft:soul_soil

   /summon minecraft:horse ~ ~ ~ {Tame:1b,body_armor_item:{components:{"minecraft:enchantments":{levels:{"minecraft:soul_speed":3}}},count:1,id:"minecraft:diamond_horse_armor"},SaddleItem:{count:1,id:"minecraft:saddle"}}

2. Mount the horse, ride it on the soul soil, and observe if the soul speed enchantment works.

Observed Behavior:

The soul speed enchantment doesn't function on horse armor.

Expected Behavior:

The soul speed enchantment would function on horse armor.