Angular scroll glue not work on chat app

Im using angular glue to scroll to bottom of my chat app. But it only work on the sender site. The receiver windown didn't get the scroll to bottom.

 <div id="chat" scroll-glue force-glue>
        <ul id="mychat">
      </ul>
 </div>

Angularjs code inside chat function.

 Sovar myEl = angular.element( document.querySelector( '#mychat' ) );
 myEl.append('<li><strong>' + data.user + ':</strong> ' +data.msg+'</li>');

via Vuong Tran