diff --git a/core/lib/Drupal/Core/Field/Plugin/Field/FieldWidget/TimestampWidget.php b/core/lib/Drupal/Core/Field/Plugin/Field/FieldWidget/TimestampWidget.php
index ffc7b86..17095ab 100644
--- a/core/lib/Drupal/Core/Field/Plugin/Field/FieldWidget/TimestampWidget.php
+++ b/core/lib/Drupal/Core/Field/Plugin/Field/FieldWidget/TimestampWidget.php
@@ -67,7 +67,7 @@ public function formElement(FieldItemListInterface $items, $delta, array $elemen
    *
    * @todo Convert to massageFormValues() after https://drupal.org/node/2226723 lands.
    */
-  public function elementValidate($element, &$form_state, $form) {
+  public function elementValidate($element, FormStateInterface $form_state, $form) {
     $value = trim($element['#value']);
     if (empty($value)) {
       $value = $this->getSetting('use_request_time_on_empty') ? REQUEST_TIME : 0;
diff --git a/core/modules/datetime/src/Plugin/Field/FieldWidget/DateTimeTimestampWidget.php b/core/modules/datetime/src/Plugin/Field/FieldWidget/DateTimeTimestampWidget.php
index 828a7c5..b508954 100644
--- a/core/modules/datetime/src/Plugin/Field/FieldWidget/DateTimeTimestampWidget.php
+++ b/core/modules/datetime/src/Plugin/Field/FieldWidget/DateTimeTimestampWidget.php
@@ -49,7 +49,7 @@ public function formElement(FieldItemListInterface $items, $delta, array $elemen
    *
    * @todo Convert to massageFormValues() after https://drupal.org/node/2226723 lands.
    */
-  public function elementValidate($element, &$form_state, $form) {
+  public function elementValidate($element, FormStateInterface $form_state, $form) {
     $date = $element['#value']['object'];
     if ($date->hasErrors()) {
       $value = -1;
diff --git a/core/modules/entity/src/Tests/EntityDisplayTest.php b/core/modules/entity/src/Tests/EntityDisplayTest.php
index 219ba07..3aaab55 100644
--- a/core/modules/entity/src/Tests/EntityDisplayTest.php
+++ b/core/modules/entity/src/Tests/EntityDisplayTest.php
@@ -291,7 +291,8 @@ public function testRenameDeleteBundle() {
     $expected_view_dependencies = array(
       'entity' => array('field.instance.node.article_rename.body', 'node.type.article_rename'),
       'module' => array('text', 'user')
-    );$expected_form_dependencies = array(
+    );
+    $expected_form_dependencies = array(
       'entity' => array('field.instance.node.article_rename.body', 'node.type.article_rename'),
       'module' => array('text')
     );
diff --git a/core/modules/node/src/NodeForm.php b/core/modules/node/src/NodeForm.php
index b96bf53..4a4a8fe 100644
--- a/core/modules/node/src/NodeForm.php
+++ b/core/modules/node/src/NodeForm.php
@@ -284,21 +284,6 @@ public function validate(array $form, FormStateInterface $form_state) {
       $form_state->setErrorByName('changed', $this->t('The content on this page has either been modified by another user, or you have already submitted modifications using this form. As a result, your changes cannot be saved.'));
     }
 
-    // Validate the "authored by" field.
-    if (!$form_state->isValueEmpty('uid') && !user_load_by_name($form_state->getValue('uid'))) {
-      // The use of empty() is mandatory in the context of usernames
-      // as the empty string denotes the anonymous user. In case we
-      // are dealing with an anonymous user we set the user ID to 0.
-      $form_state->setErrorByName('uid', $this->t('The username %name does not exist.', array('%name' => $form_state->getValue('uid'))));
-    }
-
-    // Validate the "authored on" field.
-    // The date element contains the date object.
-    $date = $node->date instanceof DrupalDateTime ? $node->date : new DrupalDateTime($node->date);
-    if ($date->hasErrors()) {
-      $form_state->setErrorByName('date', $this->t('You have to specify a valid date.'));
-    }
-
     // Invoke hook_node_validate() for validation needed by modules.
     // Can't use \Drupal::moduleHandler()->invokeAll(), because $form_state must
     // be receivable by reference.
diff --git a/core/modules/node/src/NodeTranslationHandler.php b/core/modules/node/src/NodeTranslationHandler.php
index 4ed4769..532e33f 100644
--- a/core/modules/node/src/NodeTranslationHandler.php
+++ b/core/modules/node/src/NodeTranslationHandler.php
@@ -76,14 +76,13 @@ protected function entityFormTitle(EntityInterface $entity) {
    */
   public function entityFormEntityBuild($entity_type, EntityInterface $entity, array $form, FormStateInterface $form_state) {
     if ($form_state->hasValue('content_translation')) {
-      $form_controller = content_translation_form_controller($form_state);
       $translation = &$form_state->getValue('content_translation');
-      $translation['status'] = $form_controller->getEntity()->isPublished();
+      $translation['status'] = $entity->isPublished();
       // $form['content_translation']['name'] is the equivalent field
       // for translation author uid.
       $account = $entity->uid->entity;
       $translation['name'] = $account ? $account->getUsername() : '';
-      $translation['created'] = format_date($form_state['values']['created'][0]['value'], 'custom', 'Y-m-d H:i:s O');
+      $translation['created'] = format_date($entity->created->value, 'custom', 'Y-m-d H:i:s O');
     }
     parent::entityFormEntityBuild($entity_type, $entity, $form, $form_state);
   }