title: JavaFX - setVisible hides the element but doesn't rearrange adjacent nodes
body: <p>In JavaFX, if I have a scene with 2 <code>VBox</code> elements and each <code>VBox</code> has multiple <code>Label</code> in it.<br>
  If I set the top <code>VBox</code> to <strong>invisible</strong>, why does the bottom <code>VBox</code> <strong>not move up</strong> the scene where the top <code>VBox</code> was ?  </p>
  
  <p>The <code>VBox</code> is <strong>invisible</strong> but I would expect the other objects to move into its place.</p>
  
  <p>I am using FXML to load my controls.</p>