CubicCurve shouldn't be filling the shape by default.

I was simply trying to mimic a cubic curve similar to Java 2D API's CubicCurve2D with javafx.scene.shape.CubicCurve

I believe the stroke width doesn't seem to work either.

Java 2D code below:
        CubicCurve2D cubicCurve = new CubicCurve2D.Float(
                50, 75, // start pt (x1,y1)
               80, -25, // control pt1
                110, 175, // control pt2
                140, 75 // end pt (x2,y2)
        );

        g2d.draw(cubicCurve);

JavaFX code below:

        CubicCurve cubicCurve = CubicCurveBuilder.create()
                .startX(50).startY(75) // start pt (x1,y1)
                .controlX1(80).controlY1(-25) // control pt1
                .controlX2(110).controlY2(175) // control pt2
                .endX(140).endY(75) // end pt (x2,y2)
                .strokeWidth(3).build();
        root.getChildren().add(cubicCurve);