Issue #1896990 by tim.plunkett: Fixed Cannot edit a View's title from the UI.

core/modules/views/includes/ajax.inc

@@ -208,7 +208,7 @@ function views_ajax_command_replace_title($title) {
   $command = array(
     'command' => 'viewsReplaceTitle',
     'title' => $title,
-    'siteName' => config('system.site')->id(),
+    'siteName' => config('system.site')->get('name'),
   );
   return $command;
 }