Amaya 8.7.1/9.0 bug: list inside a button

Hi,

The following code:
   <p>
     <button>Click me to
         <ul>
          <li>validate</li>
          <li>and send</li>
         </ul>
      </button>
   </p>
is valid according the W3C validator, but Amaya 8.7.1 and Amaya 9.0 do
not understand it. The button is displayed as a list with a button in
each item. If the web page is modified and saved, the original button is
replaced by the three-buttons list.

By the way, the button element is poorly displayed . For instance, this code
   <p>
     <button>Validate and<br />send</button>
   </p>
is displayed without the line break (at least, it can be created and it
is not distroyed when saving).

Best regards,
Bartolomé Sintes (http://www.mclibre.org)