title: Oracle Apex 5 - Interactive report - Header not visible
body: <p>I'm having some problem with some Interactive Reports: the header of them it's not visible (but I can see the "space" reserved to it) until I don't perform a research: after it they become visible. 
  Some details more:</p>
  
  <ul>
  <li>Application Express 5.0.4.00.12</li>
  <li>The first column of the report is hidden</li>
  <li>If the first column is set as Link with a small image the header works normally.</li>
  <li>I'm using the default thema.</li>
  </ul>
  
  <p>Thanks in advance for the help.</p>