Not sure why, but a page with some markup code embeded into it results in the a url that looks like this.
and for whatever reason does not bind and render some knockout.
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You can get rid of
/_layouts/15/start.aspx in the URL by going to Site Actions -> Site Settings -> Manager Site Features -> Deactivate Minimal Download Strategy feature
However this is a new framework in SharePoint 2013, which increases performance of SharePoint site..
More reading here: