Run next code snippet with different rendering options.
EXPECTED: Fully red circle (because stroke is wider then radius)
OBSERVED for j2d and swing: Red circle with gray fill

screenshot attached
-------------------------

import javafx.lang.FX;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.stage.Stage;

public class DoCircle {
    public static void main(String[] args) {
        FX.start(new Runnable() {
            public void run() {
                Stage stage = new Stage();
                stage.setTitle(System.getProperty("javafx.toolkit","") + System.getProperty("prism.order",""));
                stage.setWidth(300);
                stage.setHeight(300);

                Circle circle = new Circle(150, 150, 30);
                circle.setStrokeWidth(80);
                circle.setFill(Color.GRAY);
                circle.setStroke(Color.RED);

                Scene scene = new Scene(new Group(circle));
                stage.setScene(scene);
                stage.setVisible(true);
            }
        });
    }
}