Hi. It is an UX best practice for small interaction elements to have a clickable area which is larger than themselves.
This is usually done with transparent drop-shadows in CSS or with transparent filters in SVG.
Having extended a Draggable SVG element with a filter, the "draggable cursor" does not appear if the mouse is over the filter of the element.
I think this is a major flaw of GreenSock - lots of animatable elements to be interacted with need to be small.
It would be nice to have this flaw fixed soon.