HarmonyOS 使用Web组件时出现退出page重新打开地址白屏问题

用web组件在page中加载地址，加载完后退出page，再进来打开这个地址显示白屏

build() {
  Column() {

    Web({ src: this.path, controller: this.controller })
      .domStorageAccess(true)
      .javaScriptAccess(true)
      .onErrorReceive((event)=>{
        Logger.info('MainWebView====> onErrorReceive  ' + event?.error.getErrorInfo())
      })
      .onProgressChange((event)=>{
        // Logger.info('MainWebView====> onProgressChange  ' + event?.newProgress)
      })
  }
}


aboutToAppear(): void {
  webview.once('webInited', () => {
  try {
  let ua = this.controller.getUserAgent() + ';CBN';
  this.controller.setCustomUserAgent(ua);
  Logger.info('MainWebView====> UserAgent  ' + ua)
} catch (error) {
}
})
}