4 ms·

> The problem is updates break it frequently. And IIRC they have expressed intent to remove this possibility completely.

• kibwen 6y ago
  Source?
  • bartvk 6y ago
    Isn't it obvious? Since Firefox 69 or so, loading of userChrome.css and userContent.css is turned off by default, and must be explicitly enabled in about:config. Which is where features go to die.