title: Request headers (and cookies sent) missing in Chrome Network Inspector?
body: <p>I've noticed that request headers and cookies sent have disappear from network inspection in some cases (XHR request for example), at least with OSX Google Chrome. </p>
  
  <p>If you don't see what I mean, just open the web inspector and connect to your Twitter account, then check the XHR requests: you can see request payload and response headers but headers and cookies sent have disappear.</p>
  
  <p>Any idea how to fix this ? I've tried activating some exotic flags in about:flags but saw no changes.</p>