I'd like to use a polygon for my node selection area. The polygon is a union of two rectangles one of which is placed on top of the other. In another word, the two rectangles don't overlap. The union is a "tight" union, e.g, the result of the union is a polygon made up of the areas of the two rectangles. And I modified my tool behavior's getSelectionBorder() to return such a polygon. But what's drawn on the canvas is still a large rectangle for the selection border. And the floating palette around the node disappeared too.
So does Graphiti support non-rectangular selection border?