popup z-index issues with fixed headers on Android

popup z-index issues with fixed headers on Android

When opening a popup from a fixed header, the popup will appear behind the header when using the Android default web browser.

I was able to reproduce this problem using the following sample page on a Samsung Galaxy Tab 2 running Android 4.0.4:
  1. <!DOCTYPE html>
    <html>
    <head>
        <title>My Page</title>
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <link rel="stylesheet" href="http://code.jquery.com/mobile/1.2.0/jquery.mobile-1.2.0.min.css" />
        <script src="http://code.jquery.com/jquery-1.8.2.min.js"></script>
        <script src="http://code.jquery.com/mobile/1.2.0/jquery.mobile-1.2.0.min.js"></script>
    </head>
    <body>

    <div data-role="page">

        <div data-role="header" data-position='fixed'>
            <h1>My Title</h1>
            <a href="#popupBasic" data-rel="popup">Open Popup</a>

            <div data-role="popup" id="popupBasic">
                <p>This is a completely basic popup, no options set.<p>
            </div>
        </div><!-- /header -->

        <div data-role="content">   
            <p>Hello world</p>       
        </div><!-- /content -->

    </div><!-- /page -->

    </body>
    </html>