In beta 4, mouse buttons 8 and 9 are mapped to forward and back. Works for me.
That's since https://bugzilla.mozilla.org/show_bug.cgi?id=355477 landed upstream. -- forward and back mouse buttons don't work https://bugs.launchpad.net/bugs/202045 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs