title: JSTree bug with ngnix
body: <p>A Laravel app is using the JSTree to display files.</p>
  
  <p>If I get the tree under <a href="http://localhost:8000" rel="nofollow">http://localhost:8000</a> I recive the correct tree.</p>
  
  <p>We have a ngnix reverse Proxy setting to access the web site from behind a proxy.</p>
  
  <p>But if I open the ngnix web site there are in some cases no data. The ajax response is correct, but JSTree doesn't render it.</p>
  
  <p>Have anybody a idea?</p>