title: Using window.open repeatedly produces unexpected result
body: <p>My browser allows any website to show pop-ups (made using <code>window.open</code>).</p>
  
  <pre><code>window.open("http://www.google.com/","_blank");
  </code></pre>
  
  <p>The above code opens <code>google.com</code> on a new tab.<hr></p>
  
  <p>However, when I use <code>window.open</code> repeatedly like this:</p>
  
  <pre><code>window.open("http://www.google.com/","_blank");
  window.open("http://www.facebook.com/","_blank");
  window.open("http://www.example.com/","_blank");
  </code></pre>
  
  <p>Now, <code>google.com</code> is opened on a new tab, while <code>facebook.com</code> and <code>example.com</code> are opened as pop-up windows. I actually want to have the 3 links to open in new tabs but I can't achieve that.</p>
  
  <p>How can I fix this?</p>