updated core to 8.6.1 via composer

core/modules/path/src/Controller/PathController.php

@@ -59,7 +59,8 @@ class PathController extends ControllerBase {
    *   The request object.
    *
    * @return array
-   *   A render array as expected by drupal_render().
+   *   A render array as expected by
+   *   \Drupal\Core\Render\RendererInterface::render().
    */
   public function adminOverview(Request $request) {
     $keys = $request->query->get('search');

core/modules/path/src/Form/PathFormBase.php

@@ -138,7 +138,7 @@ abstract class PathFormBase extends FormBase {
     else {
       $form['langcode'] = [
         '#type' => 'value',
-        '#value' => $this->path['langcode']
+        '#value' => $this->path['langcode'],
       ];
     }
 
@@ -212,7 +212,7 @@ abstract class PathFormBase extends FormBase {
 
     $this->aliasStorage->save($source, $alias, $langcode, $pid);
 
-    drupal_set_message($this->t('The alias has been saved.'));
+    $this->messenger()->addStatus($this->t('The alias has been saved.'));
     $form_state->setRedirect('path.admin_overview');
   }
 

core/modules/path/src/Plugin/Field/FieldWidget/PathWidget.php

@@ -49,6 +49,27 @@ class PathWidget extends WidgetBase {
       '#type' => 'value',
       '#value' => $items[$delta]->langcode,
     ];
+
+    // If the advanced settings tabs-set is available (normally rendered in the
+    // second column on wide-resolutions), place the field as a details element
+    // in this tab-set.
+    if (isset($form['advanced'])) {
+      $element += [
+        '#type' => 'details',
+        '#title' => t('URL path settings'),
+        '#open' => !empty($items[$delta]->alias),
+        '#group' => 'advanced',
+        '#access' => $entity->get('path')->access('edit'),
+        '#attributes' => [
+          'class' => ['path-form'],
+        ],
+        '#attached' => [
+          'library' => ['path/drupal.path'],
+        ],
+      ];
+      $element['#weight'] = 30;
+    }
+
     return $element;
   }