directory : piklist/includes/class-piklist.php
line : 440
default : return str_replace('.php', '', str_replace(array('-', ' '), '_', strtolower($string)));
modify : return str_replace('.php', '', str_replace(array('-', ' '), '_', mb_strtolower($string, 'UTF-8')));
in workflow title when title is utf8 for example “اطلاعات فنی” , all url is broken, for fix it i solution replacing mb_strtolower instead of strtolower
thanks