From d3a5be7ed6f36287a21530fb7539fe441ffb4c6b Mon Sep 17 00:00:00 2001
From: yueh <yueh@users.noreply.github.com>
Date: Thu, 21 Sep 2017 20:41:30 +0200
Subject: [PATCH] Fixes #3105: Dupe bug due to forge default itemhandler
 implementation. (#3106)

---
 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 5dd1c1dce..8f0c19152 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.setCount( 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.isEmpty() )
 					{
-						gathered = extracted;
+						gathered = extracted.copy();
 					}
 					else
 					{