Spurious MouseDragged events on OpenSolaris

This is reproducible with marina build only on OpenSolaris platform.

Clicking on a node triggered Mouse Dragged events. To reproduce, run the below code. Click on the rectangle and see the messages on command window.

import javafx.stage.*;
import javafx.scene.*;
import javafx.scene.shape.*;
import javafx.scene.paint.*;
import javafx.scene.input.*;

Stage {
    scene: Scene {
        content: Rectangle {
            x: 20
            y: 20
            width: 50
            height: 40
            fill: Color.BLUE
            onMouseDragged: function(e: MouseEvent) {
                println("mouse dragged");
            }
        }
    }
    width: 200
    height: 200
};