From 3da9bd4567163fd69ab5a5020a9835db75d0726a Mon Sep 17 00:00:00 2001
From: Thinkofdeath <thinkofdeath@spigotmc.org>
Date: Wed, 2 Jul 2014 23:35:51 +0100
Subject: [PATCH] Better item validation


diff --git a/src/main/java/net/minecraft/world/item/ItemStack.java b/src/main/java/net/minecraft/world/item/ItemStack.java
index 969bfdf1c..a7e444f97 100644
--- a/src/main/java/net/minecraft/world/item/ItemStack.java
+++ b/src/main/java/net/minecraft/world/item/ItemStack.java
@@ -200,6 +200,10 @@ public final class ItemStack implements DataComponentHolder {
                     registryfriendlybytebuf.writeVarInt(0);
                 } else {
                     registryfriendlybytebuf.writeVarInt(itemstack.getCount());
+                    // Spigot start - filter
+                    itemstack = itemstack.copy();
+                    CraftItemStack.setItemMeta(itemstack, CraftItemStack.getItemMeta(itemstack));
+                    // Spigot end
                     Item.STREAM_CODEC.encode(registryfriendlybytebuf, itemstack.getItemHolder());
                     streamcodec.encode(registryfriendlybytebuf, itemstack.components.asPatch());
                 }
-- 
2.49.0