From 92348d7d98c3c7297ce169ead5d60a90c8d35e68 Mon Sep 17 00:00:00 2001
From: Nedelosk <nedelosk@gmail.com>
Date: Sat, 10 Sep 2016 22:43:41 +0200
Subject: [PATCH] Fix a bug that changes the NbtTagCombound of the original
 ItemStack if it has capabilities (#423)

---
 src/main/java/mezz/jei/util/StackHelper.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/mezz/jei/util/StackHelper.java b/src/main/java/mezz/jei/util/StackHelper.java
index 6ea44b7fe..1f5aa1b14 100644
--- a/src/main/java/mezz/jei/util/StackHelper.java
+++ b/src/main/java/mezz/jei/util/StackHelper.java
@@ -384,7 +384,7 @@ public String getUniqueIdentifierForStack(@Nonnull ItemStack stack, @Nonnull Uid
 			itemKey.append(':').append(metadata);
 
 			NBTTagCompound serializedNbt = stack.serializeNBT();
-			NBTTagCompound nbtTagCompound = serializedNbt.getCompoundTag("tag");
+			NBTTagCompound nbtTagCompound = serializedNbt.getCompoundTag("tag").copy();
 			if (serializedNbt.hasKey("ForgeCaps")) {
 				if (nbtTagCompound == null) {
 					nbtTagCompound = new NBTTagCompound();