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
@@ -84,14 +84,17 @@
    * Get inline template to avoid Twig autoescape
    * See https://www.drupal.org/node/2311123
    * @param string $content
-   * @param bolean $with_entities
+   * @param boolean $is_html_code
    * @return string
    */
-  private function getInlineTemplate($content, $with_entities) {
+  private function getInlineTemplate($content, $is_html_code) {
     return array(
       'string' => array(
         '#type' => 'inline_template',
-        '#template' => $with_entities ? '<code>'. htmlentities($content) . '</code>' : $content,
+        '#template' => $is_html_code ? '<code>{{content}}</code>' : $content,
+        '#context' => array(
+          'content' => $content,
+        ),
       ),
     );
   }