Seems that the issue is not related to the $.ui.loadContent
function, but to the routing. In some earlier versions of Android, and Google Chrome, when the link is put like this:
<a href="/mycontroller/myaction/param1">Link</a>
The webview/browser tries to open a local file (file:///path/to/app/mycontroller/myaction/param1), and AppFramework is not able to handle the route and execute the related action.
An ugly, but useful solution, is to execute javascript to invoke the action:
<a href="javascript:$.mvc.route('/mycontroller/myaction/param1');">Link</a>
A more elegant but heavier solution in terms of performance, could be to rewrite all the routes of the links to invoke the javascript function on init.