2-finger scroll only works about 50% of the time, seemingly at random. Might be caused by finger positions, but I really can't tell. When it doesn't recognize two fingers it works as a regular pointer motion of course.
Product: Samsung 900X3E
Touchpad: ETPS/2 Elantech Touchpad
libinput version: 1.7.1
*** This bug has been marked as a duplicate of bug 100463 ***