Ticket #22052: 22052.2.diff

wp-includes/post-template.php

@@ -500 +500 @@
         if ( is_user_logged_in() )
                 $classes[] = 'logged-in';
 
-        if ( is_admin_bar_showing() )
+        if ( is_admin_bar_showing() ) {
                 $classes[] = 'admin-bar';
+                $classes[] = 'no-customize-support';
+        }
 
         if ( get_theme_mod( 'background_color' ) || get_background_image() )
                 $classes[] = 'custom-background';