From 186b4a63a0b54041e848706695b3a0328d14004e Mon Sep 17 00:00:00 2001
From: Lewis Voncken <lewis@experius.nl>
Date: Wed, 16 May 2018 11:52:31 +0200
Subject: [PATCH] [BUGFIX] [issue-13720] Allow more then 2 products with the
 same position in the Admin for Related Products

---
 .../Model/ProductLink/CollectionProvider.php        | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/app/code/Magento/Catalog/Model/ProductLink/CollectionProvider.php b/app/code/Magento/Catalog/Model/ProductLink/CollectionProvider.php
index b635d854c9e2b..0c821d3cfcc62 100644
--- a/app/code/Magento/Catalog/Model/ProductLink/CollectionProvider.php
+++ b/app/code/Magento/Catalog/Model/ProductLink/CollectionProvider.php
@@ -54,13 +54,14 @@ public function getCollection(\Magento\Catalog\Model\Product $product, $type)
         }
 
         foreach ($output as $item) {
-            $itemPosition = $item['position'];
-            if (!isset($sorterItems[$itemPosition])) {
-                $sorterItems[$itemPosition] = $item;
-            } else {
-                $newPosition = $itemPosition + 1;
-                $sorterItems[$newPosition] = $item;
+            $itemPosition = (int)$item['position'];
+            while (true) {
+                if (!isset($sorterItems[$itemPosition])) {
+                    break;
+                }
+                $itemPosition += 1;
             }
+            $sorterItems[$itemPosition] = $item;
         }
         ksort($sorterItems);
         return $sorterItems;