title: CI doesn't return the view buffer
body: <p>My problem is when I load a view file, it sends it directly to the browser instead of returning it:</p>
  
  <pre><code>$output=$this-&gt;load-&gt;view('topic', $data, TRUE); 
  </code></pre>
  
  <p>I’ve two controllers. Each controller extend another controller before it extend the <code>CI_Controller</code> such as :</p>
  
  <pre><code>topics_admin extends Backend(which extends CI_controller) 
  
  topics extends Frontend (which extends CI_controller)
  </code></pre>
  
  <p>The first controller behaves as expected but the second one has the problem i’ve explained.
  There are no major differences between the 2 Frontend &amp; Backend controllers.</p>
  
  <p>I’m using CI 2 and I haven’t touched the core classes.</p>
  
  <p>What's wrong with it?</p>