Target
Runing view Cookies should show you these same cookies being returned by the AJAX call
If the lists don't match, try reloading this page, it sets a test cookie, but we can't see it on the PHP side until the client returns it on a test.
array(1) {
  ["PHPSESSID"]=>
  string(26) "pihuqa1orr9fvc3mrbuau5k217"
}