title: Chrome devtools reporting the same CSS on the same line twice
body: <p>Chrome DevTools is reporting the same CSS on the same line twice. Is anyone else seeing this? How can I fix it?</p>
  
  <p>The problem occurs in both stable (40) and Canary (42)</p>
  
  <p><img src="https://i.stack.imgur.com/6A2kY.png" alt="enter image description here"></p>
  
  <p><code>style.css</code> is being loaded exactly once. It is not minified.</p>
  
  <p><img src="https://i.stack.imgur.com/bIE6B.png" alt="enter image description here"></p>