Default method returns true for a while, and then returns false

FULL PRODUCT VERSION :
java version "1.8.0"
Java(TM) SE Runtime Environment (build 1.8.0-b129)
Java HotSpot(TM) 64-Bit Server VM (build 25.0-b69, mixed mode)

FULL OS VERSION :
Microsoft Windows [Version 6.3.9600]

A DESCRIPTION OF THE PROBLEM :
For the description, refer to: http://stackoverflow.com/questions/22096052/method-returns-true-for-a-while-and-then-returns-false-possible-jvm-bug

I have noticed the https://bugs.openjdk.java.net/browse/JDK-8031695
-> However there it is claimed that the bug has been fixed before the build that I am running, which is not the case.

THE PROBLEM WAS REPRODUCIBLE WITH -Xint FLAG: Did not try

THE PROBLEM WAS REPRODUCIBLE WITH -server FLAG: Did not try

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run the code outlined in the description, and the bug will appear.

EXPECTED VERSUS ACTUAL BEHAVIOR :
Expected behaviour is that the output for drawable.isShadowReceiver() and drawable.isShadowCaster() is always true.

Actual behaviour is that it becomes false after a certain number of iterations/invokes.
REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
public abstract class Drawable implements DrawableInterface {

}

interface DrawableInterface {
    default public boolean isShadowReceiver() {
        return false;
    }

    default public boolean isShadowCaster() {
        return false;
    }
}

public interface ShadowDrawable extends DrawableInterface {
    @Override
    default public boolean isShadowReceiver() {
        return true;
    }

    @Override
    default public boolean isShadowCaster() {
        return true;
    }
}

public class Box extends Drawable implements ShadowDrawable {

}

public class IsolatedBug {
    private final Box box;

    private final List<Drawable> drawables;

    public IsolatedBug() {
        this.box = new Box();
        this.drawables = new ArrayList<>();

        drawables.add(box);
        drawables.forEach(drawable -> System.out.println(drawable + " C=" + drawable.isShadowCaster() + "/R=" + drawable.isShadowReceiver()));
    }

    private void init() throws InterruptedException {
        while (true) {
            drawables.forEach(drawable -> System.out.println(drawable + " C=" + drawable.isShadowCaster() + "/R=" + drawable.isShadowReceiver()));
            Thread.sleep(1000);
        }
    }

    public static void main(String[] args) throws InterruptedException {
        new IsolatedBug().init();
    }
}
---------- END SOURCE ----------