wrong sorting after upgrade in forum_threads_list_panel

$result = dbquery(
 "SELECT   f.forum_id, f.forum_cat, f.forum_name, f.forum_description, f.forum_moderators, f.forum_lastpost, f.forum_postcount,
 f.forum_threadcount, f.forum_lastuser, f.forum_access, f2.forum_name AS forum_cat_name, f2.forum_description AS forum_cat_description,
 t.thread_id, t.thread_lastpost, t.thread_lastpostid, t.thread_subject, t.thread_postcount, t.thread_views, t.thread_lastuser, t.thread_poll,
 u.user_id, u.user_name, u.user_status, u.user_avatar
 FROM ".DB_FORUMS." f
 LEFT JOIN ".DB_FORUMS." f2 ON f.forum_cat = f2.forum_id
 LEFT JOIN ".DB_THREADS." t ON f.forum_id = t.forum_id AND f.forum_lastpost=t.thread_lastpost
 LEFT JOIN ".DB_USERS." u ON f.forum_lastuser = u.user_id
 ".(multilang_table("FO") ? "WHERE f2.forum_language='".LANGUAGE."' AND" : "WHERE")." ".groupaccess('f.forum_access')." AND f.forum_cat!='0' AND t.thread_lastpost >= ".$timeframe." AND t.thread_hidden='0'
 GROUP BY thread_id ORDER BY t.thread_lastpost DESC LIMIT ".$settings['numofthreads'].""
);