[LayaAirIDE 2.0]LayaAir 2.0.1 切换场景报异常 Cannot read property ‘_physicsUpdateList’

项目换了新库2.0.1之后，切换场景报异常 Cannot read property ‘_physicsUpdateList’of null
求指导~~
 
    __proto._onDestroy=function(){ 
        (this._inPhysicUpdateListIndex!==-1)&& (this._simulation._physicsUpdateList.remove(this)); 
        var physics3D=Laya3D._physics3D;
        delete PhysicsComponent._physicObjectsMap[this.id];
        physics3D.destroy(this._nativeColliderObject);
        this._colliderShape.destroy();
        _super.prototype._onDestroy.call(this);
        this._nativeColliderObject=null;
        this._colliderShape=null;
        this._simulation=null;
        (this.owner).transform.off(/*laya.events.Event.TRANSFORM_CHANGED*/"transformchanged",this,this._onTransformChanged);
    }