title: Can't bind to 'aria-valuenow' since it isn't a known property of 'div'
body: <p>What's wrong with the following code?
  Hapenned to me when I tried to assign an expression to an element,</p>
  
  <pre><code>&lt;div class="progress-bar progress-bar-striped active" role="progressbar"
    aria-valuenow="{{MY_PREC}}" aria-valuemin="0" aria-valuemax="100" &gt;
      {{MY_PREC}}
    &lt;/div&gt;
  </code></pre>
  
  <p>also tried as </p>
  
  <pre><code>[aria-valuenow]={{MY_PREC}}
  </code></pre>
  
  <p>Seem like it happens since RC5</p>
  
  <p>any ideas?</p>