HarmonyOS 使用RelativeContainer 布局，Image下的控件背景色会导致底部出现白线

@Entry
@Component
export struct ImageExample {

  build() {
    RelativeContainer() {
      Text()
        .width(68)
        .height(90)
        .backgroundColor('#ffffffff')
        .borderRadius(8)
        .alignRules({
          bottom: { anchor: "row1", align: VerticalAlign.Bottom },
          middle: { anchor: "__container__", align: HorizontalAlign.Center }
        })
        .id("image_bg")
      // 素材缩略图
      Image($r('app.media.demo'))
        .width(68)
        .borderRadius(8)
        .alignRules({
          top: { anchor: "__container__", align: VerticalAlign.Top },
          middle: { anchor: "__container__", align: HorizontalAlign.Center }
        })
        .id("row1")
        .draggable(false)
    }
    .width('100%')
  }
}