Ticket #19803: 19803.patch

wp-includes/link-template.php

@@ -1565 +1565 @@
 
         if ( !is_single() && $paged > 1 ) {
                 $attr = apply_filters( 'previous_posts_link_attributes', '' );
-                return '<a href="' . previous_posts( false ) . "\" $attr>". preg_replace( '/&([^#])(?![a-z]{1,8};)/', '&#038;$1', $label ) .'</a>';
+                return '<a href="' . previous_posts( false ) . "\" $attr>". preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&#038;$1', $label ) .'</a>';
         }
 }