My Engadget feed has always looked broken, like the CSS is missing or something. It’s the only one that’s had this problem. Lately I’ve noticed that sometimes it fixes itself, and the other day I managed to get it to show both the broken and the unbroken states reproducibly.
Please see this screencast: http://screencast.com/t/RZCTHPHc - observe that the “Virgin Media” article is not even in the top list, only in the bottom one. Clicking on it fixes the feed. Clicking on the other stories breaks it again.
My feed URL is https://www.newsblur.com/site/1498485/engadget-rss-feed