title: Modal is transitioning error with bootstrap4 alpha6 modal
body: <p>I am using bootstrap4 alpha 6 Modal, I am getting:</p>
  
  <pre><code>Error: Modal is transitioning
  </code></pre>
  
  <p>That happen when I am trying to re-trigger the same modal again with dynamic data through JavaScript function as following:</p>
  
  <pre><code>function openModal(title, text) {
      $('.modal-title').text(title);
      $('.modal-body p').text(text);
      $('#modalAlert').modal('show');
  }
  </code></pre>
  
  <p>I tried to use setTimeout function, but didn't work as in this article:
  <a href="https://github.com/twbs/bootstrap/issues/21687" rel="nofollow noreferrer">https://github.com/twbs/bootstrap/issues/21687</a></p>
  
  <p>Any suggestions?</p>