diff -u b/core/modules/filter/filter.module b/core/modules/filter/filter.module
--- b/core/modules/filter/filter.module
+++ b/core/modules/filter/filter.module
@@ -430,6 +430,7 @@
   foreach ($variables['tips'] as $name => $tiplist) {
     foreach ($tiplist as $tip_key => $tip) {
       $tiplist[$tip_key]['attributes'] = new Attribute();
+      $tiplist[$tip_key]['tip'] = Xss::filterAdmin($tiplist[$tip_key]['tip']);
     }
 
     $variables['tips'][$name] = array(
@@ -462,7 +463,6 @@
   foreach ($variables['tips'] as $name => $tiplist) {
     foreach ($tiplist as $tip_key => $tip) {
       $tiplist[$tip_key]['attributes'] = new Attribute();
-      $tiplist[$tip_key]['tip'] = Xss::filterAdmin($tiplist[$tip_key]['tip']);
     }
 
     $variables['tips'][$name] = array(
diff -u b/core/modules/filter/src/Plugin/Filter/FilterHtml.php b/core/modules/filter/src/Plugin/Filter/FilterHtml.php
--- b/core/modules/filter/src/Plugin/Filter/FilterHtml.php
+++ b/core/modules/filter/src/Plugin/Filter/FilterHtml.php
@@ -94,12 +94,17 @@
    *   A inline_template render array.
    */
   protected function getInlineTemplate($content, $is_html_code) {
+
+    //initialize context array and add context if needed
+    $context = array();
+    if ($is_html_code) {
+      $context['content'] = $content;
+    }
+
     return array(
       '#type' => 'inline_template',
-      '#template' => $is_html_code ? '<code>{{content}}</code>' : $content,
-      '#context' => array(
-        'content' => $content,
-      ),
+      '#template' => $is_html_code ? '<code>{{ content }}</code>' : $content,
+      '#context' => $context,
     );
   }