I am referring to the version 2 examples solution of yours where you have the following javascript:
tab = App.ExampleTabs.add(new Ext.panel.Panel({
    loader : {            
            renderer : "frame",
            url: hostName + url
When this call gets to the MVC controller action and you check it with
You get the result false.

It seems not logical. Since this is an Ajax request, isn't it? Is there a way to force AJAX request on this call please?

Thank you