diff --git a/core/includes/theme.inc b/core/includes/theme.inc
index 3e74521..757b61c 100644
--- a/core/includes/theme.inc
+++ b/core/includes/theme.inc
@@ -1237,7 +1237,7 @@ function template_preprocess_html(&$variables) {
   // Construct page title.
   if (isset($variables['page']['#title']) && is_array($variables['page']['#title'])) {
     // Do an early render if the title is a render array.
-    $variables['page']['#title'] = (string) \Drupal::service('renderer')->render($variables['page']['#title']);
+    $variables['page']['#title'] = \Drupal::service('renderer')->render($variables['page']['#title']);
   }
   if (!empty($variables['page']['#title'])) {
     $head_title = array(
diff --git a/core/modules/node/src/Tests/Views/FrontPageTest.php b/core/modules/node/src/Tests/Views/FrontPageTest.php
index ba8438f..39ead99 100644
--- a/core/modules/node/src/Tests/Views/FrontPageTest.php
+++ b/core/modules/node/src/Tests/Views/FrontPageTest.php
@@ -179,11 +179,15 @@ public function testAdminFrontPage() {
     \Drupal::service('module_installer')->install(array('views_ui'));
     // Login root user with sufficient permissions.
     $this->drupalLogin($this->rootUser);
+    $this->config('system.site')
+      ->set('name', '<script>alert("xss");</script>')
+      ->save();
     // Test frontpage view.
     $this->drupalGet('node');
     $this->assertResponse(200);
     // Check that the frontpage view was rendered.
     $this->assertPattern('/class=".+view-frontpage/', 'Frontpage view was rendered');
+    $this->assertRaw('Welcome to &lt;script&gt;alert(&quot;xss&quot;);&lt;/script&gt;', 'Found the escaped view title.');
   }
 
   /**
diff --git a/core/modules/views_ui/src/ViewUI.php b/core/modules/views_ui/src/ViewUI.php
index 8168bf2..a9d7d9e 100644
--- a/core/modules/views_ui/src/ViewUI.php
+++ b/core/modules/views_ui/src/ViewUI.php
@@ -716,7 +716,11 @@ public function renderPreview($display_id, $args = array()) {
                   '#template' => "<strong>{% trans 'Title' %}</strong>",
                 ),
               ),
-              Xss::filterAdmin($executable->getTitle()),
+              array(
+                'data' => array(
+                  '#markup' => $executable->getTitle(),
+                ),
+              ),
             );
             if (isset($path)) {
               // @todo Views should expect and store a leading /. See: