Two-finger scrolling is defined in un-normalized device-specific coordinates. On touchpads with uneven resolutions, the thresholds are uneven too. This should be defined in a physical measurement (where possible) so that the distances to trigger scrolling are predictable across touchpads.
Whoopsy, that's already handled in tp_filter_motion. sorry about the noise.
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.