core/modules/link/src/Plugin/Field/FieldWidget/LinkWidget.php | 2 +-
 core/modules/menu_ui/src/Tests/MenuTest.php                   | 2 +-
 core/modules/system/system.routing.yml                        | 3 ++-
 3 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/core/modules/link/src/Plugin/Field/FieldWidget/LinkWidget.php b/core/modules/link/src/Plugin/Field/FieldWidget/LinkWidget.php
index 7a405fe..c77588a 100644
--- a/core/modules/link/src/Plugin/Field/FieldWidget/LinkWidget.php
+++ b/core/modules/link/src/Plugin/Field/FieldWidget/LinkWidget.php
@@ -204,7 +204,7 @@ public function formElement(FieldItemListInterface $items, $delta, array $elemen
     // If the field is configured to allow both internal and external links,
     // show a useful description.
     elseif ($this->supportsExternalLinks() && $this->supportsInternalLinks()) {
-      $element['uri']['#description'] = $this->t('This can be an internal Drupal path such as %add-node or an external URL such as %drupal. Enter %front to link to the front page.', array('%front' => '<front>', '%add-node' => '/node/add', '%drupal' => 'http://drupal.org'));
+      $element['uri']['#description'] = $this->t('This can be an internal Drupal path such as %add-node or an external URL such as %drupal. Enter %front to link to the front page.', array('%front' => '/', '%add-node' => '/node/add', '%drupal' => 'http://drupal.org'));
     }
 
     $element['title'] = array(
diff --git a/core/modules/menu_ui/src/Tests/MenuTest.php b/core/modules/menu_ui/src/Tests/MenuTest.php
index 07e00b8..c49af5e 100644
--- a/core/modules/menu_ui/src/Tests/MenuTest.php
+++ b/core/modules/menu_ui/src/Tests/MenuTest.php
@@ -665,7 +665,7 @@ function checkInvalidParentMenuLinks() {
       $parent = $last_link ? 'tools:' . $last_link->getPluginId() : 'tools:';
       $title = 'title' . $i;
       $edit = array(
-        'link[0][uri]' => '<front>',
+        'link[0][uri]' => '/',
         'title[0][value]' => $title,
         'menu_parent' => $parent,
         'description[0][value]' => '',
diff --git a/core/modules/system/system.routing.yml b/core/modules/system/system.routing.yml
index 7c87bb9..fecfd249 100644
--- a/core/modules/system/system.routing.yml
+++ b/core/modules/system/system.routing.yml
@@ -382,7 +382,8 @@ system.theme_settings_theme:
   path: ''
   options:
     _only_fragment: TRUE
-
+  requirements:
+    _access: 'TRUE'
 
 '<current>':
   path: '<current>'