Can't link outside of Drupal site with Primary Links

I don't know if this is actually a feature but it is breaking parts of my site. It seems that with 4.7b6 that I can no longer link to a absolute URL from the primary links of the menu. It can only link to internal aspects of the Drupal site.
This doesn't seem to make sense considering before one could always link out of the site, say to a icecast page or a mailman page and also it doesn't even show the menu items if they aren't linking to an internal drupal page.

It's also kind of confusing as to how to set that up. Is this intentional and if so is there an easy way to redirect drupal paths to external pages ? It seems like a bug to me but perhaps I'm wrong.