diff --git a/core/lib/Drupal/Core/Config/Entity/DraggableListController.php b/core/lib/Drupal/Core/Config/Entity/DraggableListController.php
index c23789b..bf541ec 100644
--- a/core/lib/Drupal/Core/Config/Entity/DraggableListController.php
+++ b/core/lib/Drupal/Core/Config/Entity/DraggableListController.php
@@ -128,7 +128,7 @@ public function validateForm(array &$form, array &$form_state) {
    * {@inheritdoc}
    */
   public function submitForm(array &$form, array &$form_state) {
-    $entities = $this->storage->loadMultiple($form_state['values'][$this->entitiesKey]);
+    $entities = $this->storage->loadMultiple(array_keys($form_state['values'][$this->entitiesKey]));
     foreach ($form_state['values'][$this->entitiesKey] as $id => $value) {
       if (isset($entities[$id]) && $entities[$id]->get($this->weightKey) != $value['weight']) {
         // Save entity only when its weight was changed.