Question

Following the MVC 4 article on new Mobile Features, I added the NuGet package jQuery.Mobile.MVC. That package installs, among other things, an older version 1.0.3b of jQuery Mobile (the current version is 1.1.0) and creates the following in _Layout.Mobile.cshtml:

$(document).bind("mobileinit", function ()
{
    // As of Beta 2, jQuery Mobile's Ajax navigation does not work in all cases (e.g.,
    // when navigating from a mobile to a non-mobile page), hence disabling it.
    $.mobile.ajaxEnabled = false;
});

I can not find any documentation on what exactly is not working, whether there is a bug filed for it, and what the status of that bug might be. The closest non-ancient similar mention in the jQuery Mobile Forum is

http://forum.jquery.com/topic/ajax-navigation-system-is-causing-problems

In that case, the OP’s issue was deemed "by design".

So…

Why might Ajax navigation be turned off out-of-the-box, and is that still a valid concern in jQuery Mobile 1.1.0?

Answer 1

This problem with MVC 4 Beta is that page navigation simply stops working after one navigation if the ajax navigation is not switched off.

This is still a valid concern in jQuery Mobile 1.1.0. I am using MVC 4 beta with jQuery Mobile 1.1.0, and navigation between pages is very unstable if the ajax navigation is not disabled.

Note:
The forum post you refer to is not related to this problem. The post is about values in the page header not being updated, which is per design.
_{(since this is the only problem for that OP, I guess he is using MVC 3)}

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About the status of this, related to your question:

(…) whether there is a bug filed for it, and what the status of that bug might be (…)

I don’t know… I am also anctious to know this. Hopefully, it will be fixed when MVC 4 is officially released.