I am not the OP, but I have the same resolution, 3840x2160 on 15.6" display. Using Firefox 63 (as of today's update) on Cosmic, I still have to set layout.css.devPixelsPerPx to 2.5 in about:config for a usable Firefox. In both X and Wayland.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1407882 Title: Firefox won't automatically adjust the toolbar / tab and content size under high resolution environment in Ubuntu 14.04.1 To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/1407882/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
