注销时，Symfony 2不会删除remember-me cookie

My goal is to do programmatically logout from controller. I use this nice solution. Everything works fine except that LONGSESS (renamed REMEMBERME) cookie not deleted. It deleted but not :)

Logout in controller code:

$response = $this->redirectToRoute('homepage');
$response->headers->clearCookie('LONGSESS');
return $response;

So, call this action.

1. Request headers for this action (as expected):

   Cookie SESS=n4jbl1m61l6bceesbeusrbq044; LONGSESS=QXBwQnVuZGxlXEVudGl0eVxVc2VyOmRYTmxja0IxYzJWeUxtTnZiUT09OjE0NDgyMDMyMjQ6ZTFhNzBlNGEyMWM4NGM3N2UzYmI3ZmJiNWIzMGM5MDg2ZDAyOWY1ZGVhMWI4NTYyNGQ0OTJmNjVmNmRjOTY2NQ%3D%3D
   

2. Response headers to this action (as expected):

   Set-Cookie:SESS=ai1gt79r49o184du3tknv7tdf6; path=/; domain=.myhost.local
   Set-Cookie:LONGSESS=deleted; expires=Thu, 01-Jan-1970 00:00:01 GMT; Max-Age=0; path=/; httponly
   Set-Cookie:SESS=deleted; expires=Thu, 01-Jan-1970 00:00:01 GMT; Max-Age=0; path=/; httponly
   

3. Redirect headers (as expected):

   Location:/app_dev.php/
   

4. Next request headers to homepage (NOT as expected - LONGSESS value is the same as previous request):

   Cookie:LONGSESS=QXBwQnVuZGxlXEVudGl0eVxVc2VyOmRYTmxja0IxYzJWeUxtTnZiUT09OjE0NDgyMDMyMjQ6ZTFhNzBlNGEyMWM4NGM3N2UzYmI3ZmJiNWIzMGM5MDg2ZDAyOWY1ZGVhMWI4NTYyNGQ0OTJmNjVmNmRjOTY2NQ%3D%3D; SESS=ai1gt79r49o184du3tknv7tdf6
   

So user is not logged out.

How may it be? LONGSESS cookie set to deleted, expired but next request has the same value?

The solution is to set third argument domain in clearCookie method call. It have to be equals to domain in session settings:

framework:
    session:
        cookie_domain: YOUR-DOMAIN.COM

and

firewalls:
    your_firewall:
            remember_me:
                domain: YOUR-DOMAIN.COM

So, the right way:

$response->headers->clearCookie('LONGSESS', '/', 'YOUR-DOMAIN.COM');

Have you tried:

$response->sendHeaders();

right after:

$response->headers->clearCookie('LONGSESS');

?