diff --git a/core/lib/Drupal/Core/Field/Plugin/Field/FieldWidget/AuthorAutocompleteWidget.php b/core/lib/Drupal/Core/Field/Plugin/Field/FieldWidget/AuthorAutocompleteWidget.php
index 5f7331b..9c79397 100644
--- a/core/lib/Drupal/Core/Field/Plugin/Field/FieldWidget/AuthorAutocompleteWidget.php
+++ b/core/lib/Drupal/Core/Field/Plugin/Field/FieldWidget/AuthorAutocompleteWidget.php
@@ -33,7 +33,7 @@ public function formElement(FieldItemListInterface $items, $delta, array $elemen
     $element = parent::formElement($items, $delta, $element, $form, $form_state);
 
     $entity = $element['#entity'];
-    $element['target_id']['#default_value'] = $entity->getOwnerId()? $entity->getOwner()->getUsername() : '';
+    $element['target_id']['#default_value'] = $entity->getOwner()? $entity->getOwner()->getUsername() : '';
 
     $user_config = \Drupal::config('user.settings');
     $element['target_id']['#description'] = $this->t('Leave blank for %anonymous.', array('%anonymous' => $user_config->get('anonymous')));
diff --git a/core/modules/node/lib/Drupal/node/NodeTranslationController.php b/core/modules/node/lib/Drupal/node/NodeTranslationController.php
index bb4d094..48f8711 100644
--- a/core/modules/node/lib/Drupal/node/NodeTranslationController.php
+++ b/core/modules/node/lib/Drupal/node/NodeTranslationController.php
@@ -80,8 +80,9 @@ public function entityFormEntityBuild($entity_type, EntityInterface $entity, arr
       $translation['status'] = $form_controller->getEntity()->isPublished();
       // $form['content_translation']['name'] is the equivalent field
       // for translation author uid.
-      $translation['name'] = $form_state['values']['uid'];
-      $translation['created'] = $form_state['values']['created'];
+      $account = user_load($form_state['values']['uid'][0]['target_id']);
+      $translation['name'] = $account ? $account->getUsername() : '';
+      $translation['created'] = format_date($form_state['values']['created'][0]['value'], 'custom', 'Y-m-d H:i:s O');
     }
     parent::entityFormEntityBuild($entity_type, $entity, $form, $form_state);
   }