I've also been seeing this, it seems to be an upstream issue. I've tried more than one distro and different gtk3 themes. I haven't found a bug in mozilla's tracker about it yet however.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1575718 Title: Input fields with no border or too small To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1575718/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs