Unfortunately, it doesn't work anymore. This feature has been removed by GTK developers because of "this may surprise user" : https://bugzilla.gnome.org/show_bug.cgi?id=630226. It doesn't seem that they are going to reimplement it.
** Bug watch added: GNOME Bug Tracker #630226 https://bugzilla.gnome.org/show_bug.cgi?id=630226 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/872055 Title: GtkNotbook scrolling tabs throug mouse doesn't work anymore To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gtk+3.0/+bug/872055/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
