user_privileges files not recalculated after moving roles in hierarchy

If you move a role to a different position in the hierarchy, the user_privileges files aren't recalculated.

For example, let's say you have roles A and B in the same level of hierarchy and your records are private. That means users cannot see each others' records. Then you move role A below B. That would mean, that users in role B can now see records from users in A. But that doesn't happen.

It seems that the user_privileges files are not recalculated.

The action Settings_Roles_MoveAjax_Action is supposed to do that:

But it seems that something inside createUserSharingPrivilegesfile() fails to do it.

However, if I run this script:

require_once 'vtlib/Vtiger/Module.php';
require_once 'include/utils/VtlibUtils.php';
require_once 'config.inc.php';
require_once 'includes/Loader.php';
require_once 'modules/Users/CreateUserPrivilegeFile.php';
vimport ('includes.runtime.EntryPoint');

$current_user = Users::getActiveAdminUser();

vtlib_RecreateUserPrivilegeFiles();

The files do get recreated.

I doulbe checked it was not a files permissions issue.