app-controllers-backend-block_manager.post.php.diff

diff --git a/app/controllers/backend/block_manager.post.php b/app/controllers/backend/block_manager.post.php
index 21b0aaff0a..f26b6f4120 100644
--- a/app/controllers/backend/block_manager.post.php
+++ b/app/controllers/backend/block_manager.post.php
@@ -355,6 +355,9 @@ if ($_SERVER['REQUEST_METHOD'] == 'POST') {
     if (defined('AJAX_REQUEST')) {
         /** @var \Tygh\Ajax $ajax */
         $ajax = Tygh::$app['ajax'];
+        if (isset($ajax->getAssignedVars()['result'])) {
+            $result = $ajax->getAssignedVars()['result'];
+        }
         if ($result === true) {
             $ajax->assign('status', 'OK');
         } elseif (is_numeric($result)) {

app-controllers-common-block_manager.php.diff

diff --git a/app/controllers/common/block_manager.php b/app/controllers/common/block_manager.php
index 97c2f5c354..3f56984c18 100644
--- a/app/controllers/common/block_manager.php
+++ b/app/controllers/common/block_manager.php
@@ -66,6 +66,14 @@ if ($request_method === 'POST') {
         }
     }
 
+    if (defined('AJAX_REQUEST')) {
+        /** @var \Tygh\Ajax $ajax */
+        $ajax = Tygh::$app['ajax'];
+        if (isset($result)) {
+            $ajax->assign('result', $result);
+        }
+    }
+
     if (AREA === 'C') {
         exit;
     }