Apply mask to Layer game object

[rexrainbow]

Version

• Phaser Version: 4.0.0

• Operating system: window 11

• Browser: firefox, chrome

Description

Test code

        var maskGameObject = this.add.graphics();
        maskGameObject.fillStyle(0xffffff, 0.5).fillRect(200, 200, 400, 200).setVisible(false);

        layer
            .enableFilters()
            .filters.external.addMask(maskGameObject);

Error message

Filters.js:354 Uncaught TypeError: gameObject.willRoundVertices is not a function
    at renderWebGLFilters (Filters.js:354:1)
    at Layer.renderWebGLStep (RenderSteps.js:88:1)
    at ListCompositor.run (ListCompositor.js:94:1)
    at Camera.run (Camera.js:198:1)
    at WebGLRenderer.render (WebGLRenderer.js:2017:1)
    at CameraManager.render (CameraManager.js:607:1)
    at Systems.render (Systems.js:382:1)
    at SceneManager.render (SceneManager.js:598:1)
    at Game.step (Game.js:494:1)
    at TimeStep.step (TimeStep.js:739:1)

gameObject here is layer game object.
From console, Layer game object does not have willRoundVertices method.