diff --git a/patches/server/fix-horse-inventories.patch b/patches/server/fix-horse-inventories.patch
new file mode 100644
index 0000000000..a239957aca
--- /dev/null
+++ b/patches/server/fix-horse-inventories.patch
@@ -0,0 +1,173 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jake Potrebic <jake.m.potrebic@gmail.com>
+Date: Sat, 6 Jul 2024 13:57:10 -0700
+Subject: [PATCH] fix horse inventories
+
+Horse inventories now combine 2 inventories (like
+result inventories).
+
+== AT ==
+public net/minecraft/world/inventory/HorseInventoryMenu SLOT_BODY_ARMOR
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftAbstractHorse.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftAbstractHorse.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftAbstractHorse.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftAbstractHorse.java
+@@ -0,0 +0,0 @@ public abstract class CraftAbstractHorse extends CraftAnimals implements Abstrac
+ 
+     @Override
+     public AbstractHorseInventory getInventory() {
+-        return new CraftSaddledInventory(getHandle().inventory);
++        return new CraftSaddledInventory(getHandle().inventory, this.getHandle().getBodyArmorAccess()); // Paper - use both inventories
+     }
+ 
+     // Paper start - Horse API
+diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryAbstractHorse.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryAbstractHorse.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryAbstractHorse.java
++++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryAbstractHorse.java
+@@ -0,0 +0,0 @@ import org.bukkit.inventory.ItemStack;
+ 
+ public class CraftInventoryAbstractHorse extends CraftInventory implements AbstractHorseInventory {
+ 
+-    public CraftInventoryAbstractHorse(Container inventory) {
++    // Paper start - combine both horse inventories
++    private final Container bodyArmor;
++    public CraftInventoryAbstractHorse(Container inventory, final Container bodyArmor) {
+         super(inventory);
++        this.bodyArmor = bodyArmor;
++        // Paper end - combine both horse inventories
+     }
+ 
+     @Override
+     public ItemStack getSaddle() {
+-        return this.getItem(0);
++        return this.getItem(net.minecraft.world.entity.animal.horse.AbstractHorse.INV_SLOT_SADDLE); // Paper
+     }
+ 
+     @Override
+     public void setSaddle(ItemStack stack) {
+-        this.setItem(0, stack);
++        this.setItem(net.minecraft.world.entity.animal.horse.AbstractHorse.INV_SLOT_SADDLE, stack); // Paper
+     }
++
++    // Paper start - combine both horse inventories
++    public Container getMainInventory() {
++        return this.inventory;
++    }
++
++    public Container getArmorInventory() {
++        return this.bodyArmor;
++    }
++
++    public ItemStack getArmor() {
++        return this.getItem(net.minecraft.world.inventory.HorseInventoryMenu.SLOT_BODY_ARMOR);
++    }
++
++    public void setArmor(ItemStack armor) {
++        this.setItem(net.minecraft.world.inventory.HorseInventoryMenu.SLOT_BODY_ARMOR, armor);
++    }
++
++    @Override
++    public int getSize() {
++        return this.getMainInventory().getContainerSize() + this.getArmorInventory().getContainerSize();
++    }
++
++    @Override
++    public ItemStack getItem(final int index) {
++        if (index == net.minecraft.world.inventory.HorseInventoryMenu.SLOT_BODY_ARMOR) {
++            final net.minecraft.world.item.ItemStack item = this.getArmorInventory().getItem(index);
++            return item.isEmpty() ? null : CraftItemStack.asCraftMirror(item);
++        } else {
++            final net.minecraft.world.item.ItemStack item = this.getMainInventory().getItem(index);
++            return item.isEmpty() ? null : CraftItemStack.asCraftMirror(item);
++        }
++    }
++
++    @Override
++    public void setItem(final int index, final ItemStack item) {
++        if (index == net.minecraft.world.inventory.HorseInventoryMenu.SLOT_BODY_ARMOR) {
++            this.getArmorInventory().setItem(index, CraftItemStack.asNMSCopy(item));
++        } else {
++            this.getMainInventory().setItem(index, CraftItemStack.asNMSCopy(item));
++        }
++    }
++    // Paper end - combine both horse inventories
+ }
+diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryHorse.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryHorse.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryHorse.java
++++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryHorse.java
+@@ -0,0 +0,0 @@ import org.bukkit.inventory.ItemStack;
+ 
+ public class CraftInventoryHorse extends CraftSaddledInventory implements HorseInventory {
+ 
+-    private final Container bodyArmorInventory;
+-
++    // Paper start - properly combine both inventories
+     public CraftInventoryHorse(Container inventory, Container bodyArmorInventory) {
+-        super(inventory);
+-        this.bodyArmorInventory = bodyArmorInventory;
+-    }
+-
+-    @Override
+-    public ItemStack getArmor() {
+-        net.minecraft.world.item.ItemStack item = this.bodyArmorInventory.getItem(0);
+-        return item.isEmpty() ? null : CraftItemStack.asCraftMirror(item);
+-    }
+-
+-    @Override
+-    public void setArmor(ItemStack stack) {
+-        this.bodyArmorInventory.setItem(0, CraftItemStack.asNMSCopy(stack));
++        super(inventory, bodyArmorInventory);
+     }
++    // Paper end - properly combine both inventories
+ }
+diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryLlama.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryLlama.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryLlama.java
++++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryLlama.java
+@@ -0,0 +0,0 @@ import org.bukkit.inventory.LlamaInventory;
+ 
+ public class CraftInventoryLlama extends CraftInventoryAbstractHorse implements LlamaInventory {
+ 
+-    private final Container bodyArmorInventory;
+-
++    // Paper start - properly combine both inventories
+     public CraftInventoryLlama(Container inventory, Container bodyArmorInventory) {
+-        super(inventory);
+-        this.bodyArmorInventory = bodyArmorInventory;
++        super(inventory, bodyArmorInventory);
++        // Paper end - properly combine both inventories
+     }
+ 
+     @Override
+     public ItemStack getDecor() {
+-        net.minecraft.world.item.ItemStack item = this.bodyArmorInventory.getItem(0);
+-        return item.isEmpty() ? null : CraftItemStack.asCraftMirror(item);
++        return this.getArmor(); // Paper
+     }
+ 
+     @Override
+     public void setDecor(ItemStack stack) {
+-        this.bodyArmorInventory.setItem(0, CraftItemStack.asNMSCopy(stack));
++        this.setArmor(stack); // Paper
+     }
+ }
+diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftSaddledInventory.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftSaddledInventory.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftSaddledInventory.java
++++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftSaddledInventory.java
+@@ -0,0 +0,0 @@ import org.bukkit.inventory.SaddledHorseInventory;
+ 
+ public class CraftSaddledInventory extends CraftInventoryAbstractHorse implements SaddledHorseInventory {
+ 
+-    public CraftSaddledInventory(Container inventory) {
+-        super(inventory);
++    // Paper start - combine both inventories
++    public CraftSaddledInventory(Container inventory, final Container bodyArmor) {
++        super(inventory, bodyArmor);
++        // Paper end - combine both inventories
+     }
+ 
+ }