On Mon, 9 Sep 2019, Gunter Königsmann wrote:
Package: libwxgtk3.0-gtk3-0v5 Version: 3.0.4+dfsg-9 Wayland only (X11 works fine): Attempts to do a two-finger scroll using my synaptic touchpad don't cause applications that use the gtk3 flavour of wxgtk to scroll. The two-finger scroll seems to be ignored instead. Ordinary gnome applications seem to work fine, instead. Also wxgtk3.0 applications that use gtk2 seem to work fine.
Upstream ticket: https://trac.wxwidgets.org/ticket/17734