Unable to use Modal Page in IE when underling page is in a mounted package

Unable to open a Modal Page dialog in Internet Explorer (IE) 7 and 8 when the underling (calling) page is mounted as a package in the web application.

Modal Page is create like: http://www.wicket-library.com/wicket-examples/ajax/modal-window - "Show modal dialog with a page ".
Add mountPackage("ie", xxxPage.class) in the WicketApplication.
Unable to open the dialog in IE 7 or 8

Error Shown:
HTTP ERROR 404
Problem accessing /ie/wicket/page. Reason:
Not Found

Notes:
The Modal works fine in Chrome (15), Firefox (3.6) and IE 6.
The Modal gets constructed.
The Modal works fine when using mountPage("ie", xxxPage.class)

Workaround:
First mount the package you want.
Second mount underling page (that calls the modal) on a separate path

Example:
mountPackage("yyy", A.class);
mountPage("zzz", B.class);
Where B is the page calling the Modal, and A is in the same package as B.

I'll provide a quick start project to reproduce this issue.