title: <select> drop-down doesn't expand
body: <p>I've got a strange Problem, but first some description:</p>
  
  <p>First there is a TreeTable - View. In each row, there is a drop-down menu in 1 column. 
  The drop-down is realized via HTML  tag. And here is my problem:</p>
  
  <ul>
  <li>If I click with a normal click on the expand button nothing happens.</li>
  <li>If I click with an right click, than the menu will expand. Afterwards it works with a normal left click, too. </li>
  </ul>
  
  <p>So I think the reason for this problem are the event listeners of the TreeTable. So I already added an if-condition and added some logging. The click is always logged, but the drop-down is still react like I've described above.</p>
  
  <p>I thought i could call the expand() Method, but as far as I know, there isn't any way to toggle the expand a  drop-down, without using jQuery. (NOTE: Refactoring the size isn't a good solution)</p>
  
  <p>So I'm at the end of my knowledge, maybe one of you knows an solution. Thank You. </p>