As you know both are sister sites and use identical HTML codes. This is the site pattern defined for Gizmodo by FTR.
title: //head/title author: //meta[@name="author"]/@content body: //div[contains(@class, 'post-content')] strip: //div[contains(@class, 'content-summary')] strip: //aside test_url: https://gizmodo.com/the-new-bad-tick-is-going-to-take-over-half-the-united-1831079855
But it fails to extract full content from the page. It fails in the test URL mentioned as well. Could you please update the site pattern for both Gizmodo and Lifehacker?