I wrote the attached example to test scrolling with a trackpad (touch events).
It works fine: the ImageView is clipped by the rectangle and scrolls underneath.

When I uncomment the two lines to position the viewGroup using anchors instead of translateX/Y, everything is all over the place when I scroll.
If I remove the anchors and use translateX/Y to get the same positioning, everything works just fine again.

Am I missing something here, or is this a bug in the AnchorPane ?