v4.2.1 Mask and Blend Mode interaction bleeding into other Container children #7387

class Example extends Phaser.Scene
{
    preload ()
    {
        // this.load.setBaseURL('https://cdn.phaserfiles.com/v385');
        this.load.image('stone', 'assets/particles/stone.png');
        this.load.atlas('sea', 'assets/animations/seacreatures_json.png', 'assets/animations/seacreatures_json.json');
    }

    create ()
    {
        this.add.image(400, 300, 'stone').setScale(3);

        const box = new Phaser.GameObjects.Container(this, 350, 300);
        this.add.existing(box);

        const blended = new Phaser.GameObjects.Image(this, -20, -100, 'sea', 'crab10000');
        blended.setBlendMode(Phaser.BlendModes.ADD);
        box.add(blended);

        const innerBox = this.add.container(0, 0);
        box.add(innerBox);

        const crab = new Phaser.GameObjects.Image(this, 0, 0, 'sea', 'crab10000');
        innerBox.add(crab);
        const jelly = new Phaser.GameObjects.Image(this, 50, 100, 'sea', 'blueJellyfish0001');
        jelly.enableFilters();
        Phaser.Actions.AddMaskShape(
            innerBox,
            { shape: 'rectangle', scaleMode: -1, invert: true, region: new Phaser.GameObjects.Rectangle(this, 325, 310, 80, 80) }
        );
        innerBox.add(jelly);
    }
}

const config = {
    type: Phaser.WEBGL,
    width: 800,
    height: 600,
    parent: 'phaser-example',
    scene: Example
};

const game = new Phaser.Game(config);