diff --git a/paper-server/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java b/paper-server/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
index 4167416ac6..eec5c087f7 100644
--- a/paper-server/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
+++ b/paper-server/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());