title: video disappears when poster attribute and preload is defined
body: <p>I have a video-tag with the following attributes:  </p>
  
  <pre><code> &lt;video width="xx" height="xx" poster="image.jpg" preload="auto"&gt;
  </code></pre>
  
  <p>I need the poster-image to show and I want the video to preload.<br>
  I don't show the browser's controls but control the video manually with custom controls (CSS &amp; Javascript). The video is supposed to start when I click on it.</p>
  
  <p>In Firefox this works as intended: I click on the poster-image and the video starts. I click on the video, the video stops.</p>
  
  <p>On current webkit-browsers (Safari 6.0.2, Chrome 23.0.1271.64) however this does not work:<br>
  As soon as I click on the poster image the <strong>video becomes invisible</strong>, leaving me with a blank (white) box. I hear the sound but can see the video. When I click on that box, the sound stops.</p>
  
  <p>If I set either <code>preload="none"</code> <strong>or</strong> leave the poster-image, this works in webkit-browsers again.</p>
  
  <p>Is there any known workaround for this?</p>