Twenty Fifteen problem with Jetpack Related Articles styling

Check out this post:
http://marcoraaphorst.nl/31401/nederland-land-van-reaguurders-laat-alle-kansen-liggen/

As you can see the 1st and 2nd link are styled incorrectly. It uses Jetpack Related Articles and with other themes the object as a whole is clickable, text and title. Now it also contains a weird hyperlink underscore which looks bad.

Only happens with this new theme Twenty Fifteen under WP 4.1