From 6f30658d416b5c23d5b8620efdb87b672a8c2fef Mon Sep 17 00:00:00 2001
From: fscan <flo@chilicode.com>
Date: Sun, 5 Nov 2017 05:37:21 +0100
Subject: [PATCH] Backport dupe fix (#3196)

---
 src/main/java/appeng/parts/misc/ItemHandlerAdapter.java | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/main/java/appeng/parts/misc/ItemHandlerAdapter.java b/src/main/java/appeng/parts/misc/ItemHandlerAdapter.java
index b5fe6115c..8d90cfa42 100644
--- a/src/main/java/appeng/parts/misc/ItemHandlerAdapter.java
+++ b/src/main/java/appeng/parts/misc/ItemHandlerAdapter.java
@@ -136,10 +136,12 @@ class ItemHandlerAdapter implements IMEInventory<IAEItemStack>, IBaseMonitor<IAE
 						extracted.stackSize = remainingCurrentSlot;
 					}
 
-					// We're just gonna use the first stack we get our hands on as the template for the rest
+					// We're just gonna use the first stack we get our hands on as the template for the rest.
+					// In case some stupid itemhandler (aka forge) returns an internal state we have to do a second
+					// expensive copy again.
 					if( gathered == null )
 					{
-						gathered = extracted;
+						gathered = extracted.copy();
 					}
 					else
 					{