Ticket #4459: 4459.diff

wp-includes/author-template.php

@@ -381 +381 @@
         foreach ( (array) $authors as $author ) {
                 $author = get_userdata( $author->ID );
                 $posts = (isset($author_count[$author->ID])) ? $author_count[$author->ID] : 0;
-                $name = $author->nickname;
+                $name = $author->display_name;
 
                 if ( $show_fullname && ($author->first_name != '' && $author->last_name != '') )
                         $name = "$author->first_name $author->last_name";