Ticket #20755: 20755.patch

wp-includes/class-wp-customize-manager.php

@@ -280 +280 @@
          * @since 3.4.0
          */
         public function customize_preview_base() {
-                ?><base href="<?php echo home_url( '/' ); ?>" /><?php
+                ?><base href="<?php echo home_url( '/' ); ?>" />
+                <!--[if lt IE 9]>
+                <script type="text/javascript">
+                        var e = [ 'abbr', 'article', 'aside', 'audio', 'canvas', 'datalist', 'details',
+                                'figure', 'footer', 'header', 'hgroup', 'mark', 'menu', 'meter', 'nav',
+                                'output', 'progress', 'section', 'time', 'video' ];
+                        for ( var i = 0; i < e.length; i++ ) {
+                                document.createElement( e[i] );
+                        }
+                </script>
+                <![endif]--><?php
         }
 
         /**