diff -u b/core/lib/Drupal/Core/Entity/ContentEntityStorageBase.php b/core/lib/Drupal/Core/Entity/ContentEntityStorageBase.php
--- b/core/lib/Drupal/Core/Entity/ContentEntityStorageBase.php
+++ b/core/lib/Drupal/Core/Entity/ContentEntityStorageBase.php
@@ -440,8 +440,7 @@
     // translation and then on all other translations.
     $current_entity_langcode = $entity->language()->getId();
     if (reset($langcodes) != $current_entity_langcode) {
-      $key = array_search($current_entity_langcode, $langcodes);
-      unset($langcodes[$key]);
+      $langcodes = array_diff($langcodes, [$current_entity_langcode]);
       array_unshift($langcodes, $current_entity_langcode);
     }
     foreach ($langcodes as $langcode) {