Patch-Magento-Catalog-M2.1.x-toolbar-default-sorting.patch

--- Block/Product/ProductList/Toolbar.php	2017-05-30 08:01:14.000000000 +0300
+++ Block/Product/ProductList/Toolbar.php	2018-07-18 23:28:15.153790499 +0300
@@ -680,7 +680,7 @@
             'limit' => ToolbarModel::LIMIT_PARAM_NAME,
             'modeDefault' => $defaultMode,
             'directionDefault' => $this->_direction ?: ProductList::DEFAULT_SORT_DIRECTION,
-            'orderDefault' => $this->_productListHelper->getDefaultSortField(),
+            'orderDefault' => $this->getOrderField(),
             'limitDefault' => $this->_productListHelper->getDefaultLimitPerPageValue($defaultMode),
             'url' => $this->getPagerUrl(),
         ];