Unsolved Drawer: how to avoid drawer snapping back when you swipe to try to close it

[Diracsbracket]

Hi
When I want to close a Drawer by swiping it back, many times, it just snaps back to its fully open position.

Apparently, to make sure to close it, the Drawer must be dragged over a sufficiently long distance: there seems to be a threshold.

I know about startDragDistance and startDragTime but these don't seem to have any effect on the closing gesture.

Any ideas?
Thanks!