Timeout on asynchronous servlet does not work on AJP connector in EAP 6.0

Issue

When using asyncronous servlets and defining a timeout and a listener on the context like the following:

@WebServlet(name = "AsyncTestServlet", urlPatterns = { "/async" }, asyncSupported = true)
public class AsyncTestServlet extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

        AsyncContext ac = request.startAsync();
        ac.setTimeout(timeout);
        ac.addListener(new MyAsyncServiceListener());
        // ...(snip)...

    }

    // ...(snip)...

    private static class MyAsyncServiceListener implements AsyncListener {
        public void onComplete(AsyncEvent arg0) throws IOException {
            System.out.println("Complete");
        }
        public void onError(AsyncEvent arg0) throws IOException {
            System.out.println("Error");
        }
        public void onStartAsync(AsyncEvent arg0) throws IOException {
            System.out.println("Start");
        }
        public void onTimeout(AsyncEvent arg0) throws IOException {
            System.out.println("Timeout");
        }
    }
}

The onTimeout() method of the listener is never called when a request is running on AJP connector though the timeout works fine on HTTP/HTTPS connector.