Why are my template filenames showing up in Google Analytics
From my testing it appears that this is an issue with Google's universal analytics.

Based off of Clive's recommendation, my solution what to change

  ga('send', 'page view');


to

  ga('send', 'pageview', {
   'page': '/{{entry.slug}}',
   'title': '{{entry.title}}'
  });


This seems to be holding up well.