There is a problem with new drivers
implementation.

a) Robot mode is used without request

Try following code:

        JFrameOperator frame = new
JFrameOperator("Explorer [");
        JTreeOperator tree = new
JTreeOperator(frame);
        
        tree.clickMouse();
       
JPopupMenuOperator.callPopup(tree.getSource());

tree.clickMouse() uses MouseEventDriver but
callPopup() uses MouseRobotDriver. Above call
popup construction is used in
JTreeOperator.callPopupOnPaths().

2) NPE from visualizer.scroll()

Try following code:

        ComponentOperator co = new
ComponentOperator(tree.getSource());
        MouseVisualizer mv = new
MouseVisualizer();
        mv.scroll(true);
        mv.makeVisible(co);

NullPointerException is thrown from scroll()
method.