Very similar case now:
The two-finger scrolling does not work at all, as if not enabled. Disable and back, reboot, power off and on ... nothing helped it.
DistroRelease: Ubuntu 18.04
Uname: Linux 4.15.0-62-generic #69-Ubuntu SMP Wed Sep 4 20:55:53 UTC 2019 x86_64
CurrentDesktop: Gnome
Very similar case now:
The two-finger scrolling does not work at all, as if not enabled. Disable and back, reboot, power off and on ... nothing helped it.
DistroRelease: Ubuntu 18.04
Uname: Linux 4.15.0-62-generic #69-Ubuntu SMP Wed Sep 4 20:55:53 UTC 2019 x86_64
CurrentDesktop: Gnome