The page controller is: ow_system_plugins/admin/controllers/users.php

The list is fetched inside "public function users()", at around line 296.

$actions = $service->getActionList();

This calls actionDao->findAll(), which calls BaseDao->findAll(), which calls queryForObjectList inside OW:getDbo. 

It looks to me like a sort order is never provided, either during this database fetch or after. Therefore, the returned sorting cannot be reliably predicted. 

Someone please correct me if I'm wrong.