The post (and this clarification [0]) state that you have to either long click or select "Preview Link" from the context menu. [0] https://connect.mozilla.org/

The post (and this clarification [0]) state that you have to either long click or select "Preview Link" from the context menu. [0] https://connect.mozilla.org/t5/discussions/try-link-previews-in-firefox-142-see-what-s-behind-a-link-before/m-p/103631/highlight/true#M40210 https://connect.mozilla.org/t5/discussions/try-link-previews...