New theme is absolutely not contrasting. The font merges with the background, no separators are visible between the elements, although the tabs opposite are separated from the page. And a huge number of other annoying little things. You suggest choosing a different theme, but there are the same problems and an additional annoying background pattern. Please make it possible to return to the classic theme and stop changing the interface and familiar controls. I am shaking from every update notification, because i expect everything will break again. I also advise you to read reviews on news sites dedicated to this update. Many people unhappy with these changes. I found a partial solution (about: config -> browser.proton.enabled -> FALSE ) problem, but as it became known, it will soon stop working. I understand that FireFox a free product and I would shut up, but it upsets me that the tool that I have been using almost all my life has gone bad. And second, and even worse, the Internet is increasingly dominated by Chrome, remaining without competition.