Hi, I’ve actually been having the same problem. I downloaded the widget before updating WordPress to 3.7.1 and updating the plugin to its most current version.
It was working fine prior to the updates, with the title text for the event taking users to the post page for the event. Not sure what happened or if I had a shortcode enabled that was doing this automatically. I will try your hidden shortcode attribute to see if this works.
Might I suggest posting the other hidden shortcodes so we can play with solutions? Thanks!