[LayaAirIDE 2.0]popup设置了关闭效果后，窗口关闭但遮罩层没有关掉，请问如何处理

popup设置了关闭效果后，窗口关闭但遮罩层没有关掉，请问如何处理
 
    //关闭效果
    hideEffect(): void {
        Laya.Tween.to(this,{y:Laya.stage.height,alpha:0},200,Laya.Ease.linearIn);
        
    }
 

import { ui } from "./ui/layaMaxUI";



export default class ShopDialog extends ui.ShopDialogUI {

    constructor() {

        super();

        this.popupEffect = Laya.Handler.create(this, this.showEffect);

        this.closeEffect = Laya.Handler.create(this, this.hideEffect);

        this.btnClose.on(Laya.Event.CLICK, this, this.closeDialog);

    }



    //关闭

    closeDialog(): void {

        this.close();

    }



    //关闭效果

    hideEffect(): void {

        Laya.Tween.to(this,{y:Laya.stage.height,alpha:0},200,Laya.Ease.linearIn);

        

    }



    //显示效果

    showEffect(): void {

        this.pos(0, Laya.stage.height);

        Laya.Tween.to(this, { y: Laya.stage.height - this.height, alpha: 1 }, 200, Laya.Ease.linearIn);

    }

}