bannerAd.destroy is not a function

原项目代码不方便整个贴出来，摘取了部分关键代码如下：

this.bannerAd = wx.createBannerAd({             adUnitId: 'adunit-xxxxhidexxxx',             style: {                 left: 0,                 top: 0,                 width: 300,                 height: 100             }         });         this.bannerAd.show();           setTimeout(() => {             this.bannerAd.destroy();         }, 4000);

在 Android 手机上运行之后，会有如下错误

gameThirdScriptError b.bannerAd.destroy is not a function;at setTimeout callback function TypeError: b.bannerAd.destroy is not a function at Function.<anonymous> (https://servicewechat.qq.com/game.js:120:16275) at Function.<anonymous> (<anonymous>:4:27175)

百分百重现。

运行环境是：

小米 Mix2 手机

微信版本：6.6.7