Issue #2102489 by InternetDevels: Remove drupal_set_title in views module controllers.

core/modules/views/includes/ajax.inc

@@ -35,7 +35,6 @@ function views_ajax_form_wrapper($form_id, &$form_state) {
 
   // These forms have the title built in, so set the title here:
   if (empty($form_state['ajax']) && !empty($form_state['title'])) {
-    drupal_set_title($form_state['title']);
     drupal_add_css(drupal_get_path('module', 'views_ui') . '/css/views_ui.admin.css');
   }
 
@@ -66,11 +65,6 @@ function views_ajax_form_wrapper($form_id, &$form_state) {
     return $response;
   }
 
-  // These forms have the title built in, so set the title here:
-  if (empty($form_state['ajax']) && !empty($form_state['title'])) {
-    drupal_set_title($form_state['title']);
-  }
-
   return $output;
 }
 

core/modules/views/lib/Drupal/views/Plugin/views/display/Page.php

@@ -91,7 +91,7 @@ public function execute() {
 
     // First execute the view so it's possible to get tokens for the title.
     // And the title, which is much easier.
-    drupal_set_title(filter_xss_admin($this->view->getTitle()), PASS_THROUGH);
+    $render['#title'] = filter_xss_admin($this->view->getTitle());
 
     $response = $this->view->getResponse();
     $response->setContent(drupal_render_page($render));