[]场景调用offAll会报错。

代码：
scene = new Scene();
Laya.stage.addChild(scene);
scene.offAll();
Laya.stage.removeChild(scene);
 scene = new Scene();
Laya.stage.addChild(scene);
scene.offAll();
Laya.stage.removeChild(scene);

scene = new Scene();
Laya.stage.addChild(scene);
Laya.stage.removeChild(scene);
 
报错：


Uncaught TypeError: Cannot read property 'parent' of null
    at Function.Scene._sortScenes (file:///E:/laya3dProject/BY3D/bin/h5/BY3D.max.js:68570:8)