Board Thread:Support Requests - Designing Your Wikia/@comment-24956068-20150820172049/@comment-4731443-20150820201044

This is a functionality that they integrated directly into the new format of portable infoboxes. If a data value is not specified by the invoking article, and the template does not provide a display option, that field won't display. You don't need to add conditions to the template code. In other words, this won't show anything if has no value: