Firefox notes

Отключить кеширование DNS:

Открыть about:config , установить

network.dnsCacheExpiration => 0
network.dnsCacheExpirationGracePeriod => 0

Values in test input fields is not-visible in dark theme

  1. Open about:config in Firefox
  2. Create a new String value, named widget.content.gtk-theme-override
  3. Set a light GTK theme name as the value, for example Arc-Darker
  4. Restart Firefox

Work on version: 62.0 (64-bit)
Source: https://www.mkammerer.de/blog/gtk-dark-theme-and-firefox/