title: New JS SDK with OAuth 2.0 saving subdomain in fbsr_ cookie?
body: <p>EDIT: This bug was logged, and confirmed as a <a href="https://developers.facebook.com/bugs/256155664428653?browse=search_4e843e6d89a232275456793" rel="nofollow">Facebook bug</a>. It has now been fixed!</p>
  
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  <p>I am testing my updates to move onto the new JS SDK. My app runs across multiple subdomains of my domain. On the old JDK, I was calling something like this:</p>
  
  <pre><code>FB.init({
      appId: [APP_ID],
      status: false,
      cookie: true,
      xfbml: true
  });
  FB.login();
  </code></pre>
  
  <p>On the new JDK, it looks like this:</p>
  
  <pre><code>FB.init({
      appId: [APP_ID],
      status: false,
      cookie: true,
      xfbml: true,
      oauth:true
  });
  FB.login();
  </code></pre>
  
  <p>Using a cookie manager FF add on, you can see that the old version would set a cookie on mydomain.com, but the new one sets it to www.mydomain.com - meaning my other subdomain cannot access the cookie.</p>
  
  <p>To clarify: The problem is that I cannot use the facebook cookie on different subdomains, and also if I log them in on every subdomain, I have to log them out from every subdomain too</p>