title: Javafx fullscreen application gets minimized when alert message is shown
body: <p>I am making a javafx application which is in full screen mode.My application gets minimized when I try to show an alert message   </p>
  
  <pre><code>Alert alert = new Alert(AlertType.INFORMATION);
  alert.setTitle(null);
  alert.setHeaderText(null);
  alert.setContentText("I have a great message for you!");
  alert.show();
  </code></pre>
  
  <p>and when I click ok button on alert Box application switches back to full screen mode.How to show alert box message with in full screen without minimizing application .</p>