From a7e576186db9a9ae3767e76b6029b4ba7037e44c Mon Sep 17 00:00:00 2001
From: md_5 <git@md-5.net>
Date: Sat, 15 Jun 2024 07:03:03 +1000
Subject: [PATCH] Fix potential mutability issue with CraftMetaItem copy
 constructor

---
 .../java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
index 4167416ac..eec5c087f 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
@@ -320,7 +320,7 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
         }
         this.damage = meta.damage;
         this.maxDamage = meta.maxDamage;
-        this.unhandledTags = meta.unhandledTags;
+        this.unhandledTags.copy(meta.unhandledTags.build());
         this.removedTags.addAll(meta.removedTags);
         this.persistentDataContainer.putAll(meta.persistentDataContainer.getRaw());