Comment 5 for bug 1418213

Comment #4: That is Android's touch prediction logic (and the relevant un-prediction) which is very small -- never more than half a frame predicted ahead. So the un-prediction at the end of a gesture is at most one touch event. If Unity8 is doing fling velocity calculation on a granularity of one event then it's probably Unity8 that needs fixing more. That would also explain why Unity8 randomly gets the fling velocity wrong (my finger is moving slowly but the scroll is flung quickly on release).

Comment #3: What about this?
/usr/share/unity8/Components/ScrollCalculator.qml
/usr/share/unity8/Panel/PanelVelocityCalculator.qml
etc.