Sounds like you are missing a library. Have you tried launching either of the browsers from command line and looking out for any error messages when loading pages with gifs?
@hyperbole started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Sounds like you are missing a library. Have you tried launching either of the browsers from command line and looking out for any error messages when loading pages with gifs?