HarmonyOS 鸿蒙Next @Builder在刷新时被重复创建的问题。

build() {
  NavDestination() {
    if (this.product.isSquare) {
      GoodsTopBar()
      Row() {
        this.ListComment()
      }
      .visibility(this.product.isSquare ? Visibility.Visible : Visibility.None)
      .width(CommonConstants.FULL_PERCENT)
      .layoutWeight(1)
    }else {
      Stack({alignContent: Alignment.Top}) {
        this.ListComment()
        GoodsTopBar()
      }
    }
  }
  .hideTitleBar(true)
  .onReady(cxt => {
    this.fetchData(cxt.pathInfo.param as GoodsRouteParams)
  })
}

@Builder ListComment() {
}


代码如上，this.product.isSquare如果改变，this.ListComment()会出现多个，请问大神们怎么解决。不想写额外写strut的情况下