Ticket #19610: 19610.patch

wp-includes/theme.php

@@ -1231 +1231 @@
         )
                 return $matches[1] . "#$matches[2] onclick=$matches[2]return false;" . $matches[4];
 
-        $link = add_query_arg( array('preview' => 1, 'template' => $_GET['template'], 'stylesheet' => @$_GET['stylesheet'] ), $matches[3] );
+        $link = add_query_arg( array( 'preview' => 1, 'template' => $_GET['template'], 'stylesheet' => @$_GET['stylesheet'], 'preview_iframe' => 1 ), $matches[3] );
         if ( 0 === strpos($link, 'preview=1') )
                 $link = "?$link";
         return $matches[1] . esc_attr( $link ) . $matches[4];