commit 0cd810095c48d4f3ac1e9dea881922bce2b8d5f0
Author: beejeebus <justin.p.randell@gmail.com>
Date:   Sat Jan 23 16:59:06 2016 -0500

    #2655526: fix block list form not being locked.

diff --git a/src/EventSubscriber/ReadOnlyFormSubscriber.php b/src/EventSubscriber/ReadOnlyFormSubscriber.php
index 2f0e4fe..149c116 100644
--- a/src/EventSubscriber/ReadOnlyFormSubscriber.php
+++ b/src/EventSubscriber/ReadOnlyFormSubscriber.php
@@ -10,6 +10,7 @@ namespace Drupal\config_readonly\EventSubscriber;
 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
 use Drupal\Core\Form\ConfigFormBase;
 use Drupal\Core\Entity\EntityFormInterface;
+use Drupal\Core\Config\Entity\ConfigEntityListBuilder;
 use Drupal\Core\Config\Entity\ConfigEntityInterface;
 use Drupal\config_readonly\ReadOnlyFormEvent;
 
@@ -28,7 +29,7 @@ class ReadOnlyFormSubscriber implements EventSubscriberInterface {
     $is_config_form = $form_object instanceof ConfigFormBase || $form_object instanceof ConfigEntityListBuilder;
 
     // Check if this is the single import form.
-    $is_config_form = $form_object->getFormId() == 'config_single_import_form';
+    $is_config_form = $is_config_form || $form_object->getFormId() == 'config_single_import_form';
 
     // Check if the form is an EntityFormInterface and entity is a config entity.
     if (!$is_config_form && $form_object instanceof EntityFormInterface) {