diff -u b/core/modules/user/src/Form/UserPermissionsForm.php b/core/modules/user/src/Form/UserPermissionsForm.php
--- b/core/modules/user/src/Form/UserPermissionsForm.php
+++ b/core/modules/user/src/Form/UserPermissionsForm.php
@@ -97,6 +97,7 @@
     $hide_descriptions = system_admin_compact_mode();
 
     $form['system_compact_link'] = array(
+      '#id' => FALSE,
       '#type' => 'system_compact_link',
     );