Unfortunately Gtk3 dropped the support for flipping through notebook pages for 'usability reasons' without making it available again with some kind of options. So applications like gnome-terminal started to re-implement this feature. For maintaining feature parity with the Gtk2 backend, geany should re-implement scrolling through notebook pages as well.
--- Reply to this email directly or view it on GitHub: https://github.com/geany/geany/issues/872
