I can't scroll using the mouse in any pane of Tixati.

I use a Logitech USB Trackball, configured to emulate a scroll-wheel by holding the right button (mouse button 3). It works in every other application for scrolling but, surprisingly, not anywhere in the current Tixati.

I haven't used Tixati in a while, but I'm almost certain that with this configuration, scrolling worked in earlier Tixati versions, maybe much earlier versions than current.  

Tixati v3.29
64-bit x86 build for Linux
Ubuntu 20.04 with X11, not Wayland.