Paper-Old/patches/server/1037-Fix-CraftMetaItem-getAttributeModifier-duplication-c.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: hyper1423 <backup8822@gmail.com>
Date: Sun, 3 Dec 2023 07:38:09 +0900
Subject: [PATCH] Fix CraftMetaItem#getAttributeModifier duplication check


diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
index ba2da16e1e17d9544535511939302da633e8ebcc..d8ac86c3a89e29696e23b8ee6fddb84eb0313ea6 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
@@ -1167,7 +1167,7 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
         Preconditions.checkNotNull(modifier, "AttributeModifier cannot be null");
         this.checkAttributeList();
         for (Map.Entry<Attribute, AttributeModifier> entry : this.attributeModifiers.entries()) {
-            Preconditions.checkArgument(!entry.getValue().getUniqueId().equals(modifier.getUniqueId()), "Cannot register AttributeModifier. Modifier is already applied! %s", modifier);
+            Preconditions.checkArgument(!(entry.getValue().getUniqueId().equals(modifier.getUniqueId()) && entry.getKey() == attribute), "Cannot register AttributeModifier. Modifier is already applied! %s", modifier); // Paper
         }
         return this.attributeModifiers.put(attribute, modifier);
     }