Linux users love to debate about desktop environments. KDE Plasma Desktop took first by a hair's breadth over the popular lightweight Xfce desktop. Other well-regarded desktop environments, such as Cinnamon and MATE, got surprisingly few votes. The once popular GNOME still hasn't recovered from the blowback from its disliked design change from GNOME 2 to GNOME 3.
Firefox may struggle as a web browser in the larger world, but on Linux it's still popular. Firefox took first place with 51.7 percent of the vote. Chrome came in a distant second place, with the rest of the vote being divided between a multitude of obscure browsers.
LibreOffice won a whopping 89.6% of the vote for "best office suite" -- and Vim beat Emacs.
The full certificate data is available from the "Developers tools" panel under the "Security" label. In fact, that's where this info has been for quite some time, but since the now missing "Details" link took you directly to that panel, most users probably didn't even realize that they were deep in the Developers tools section of the browser.
On some systems you can just press F12, but the alternate route is to click on the three vertical dots in the upper right, then select "More Tools", and then "Developer Tools". (And if you don't then see "Security", click on the " >>".)