Session Lifetime - does not work

[Jagy2014]

\protected\app\config\session.php

1. Session not expires on idle.
2. It expire on browser closing. But when I close only tab in browser then it does not expire.

/*
|--------------------------------------------------------------------------
| Session Lifetime
|--------------------------------------------------------------------------
|
| Here you may specify the number of minutes that you wish the session
| to be allowed to remain idle before it expires. If you want them
| to immediately expire on the browser closing, set that option.
|
*/

'lifetime' => 10,

'expire_on_close' => true,

/*