That Debian bug also links to Ubuntu bug 133060.
I can confirm that if I look with synclient -m 10, and do the brief two-finger scroll up motion, I see a bunch of lines with events x=1, y=5855, 0<=z<=3 at the end.
Will try the workaround next.
I don't know what "Trackstick emulation mode" is.
That Debian bug also links to Ubuntu bug 133060.
I can confirm that if I look with synclient -m 10, and do the brief two-finger scroll up motion, I see a bunch of lines with events x=1, y=5855, 0<=z<=3 at the end.
Will try the workaround next.
I don't know what "Trackstick emulation mode" is.