[REG: 5->6] ScrollView does not have smooth flicking and also does not return from overshoot

In attached example, try to scroll it with mouse wheel. The Rectangle in it does not move very much and feels heavy. It is also possible to make it go a little beyond bounds and remain out of bounds. In that state, clicking the view moves it back about one pixel at a time.

This seems to be caused by pixelAligned property set for Flickable as disabling it makes it function as it used to:
Component.onCompleted: contentItem.pixelAligned=false