#38233 Added left join type to attributes select

Author: Bartlomiejsz

app/code/Magento/Catalog/Block/Adminhtml/Category/Tab/Product.php

@@ -145,7 +145,8 @@ protected function _prepareCollection()
                 'visibility',
                 'status',
                 'price'
-            ]
+            ],
+            'left'
         );
         $collection->joinField(
             'position',