HarmonyOS 鸿蒙Next 输入法把输入框盖住了，这是怎么回事

我这边根据描述，尝试写了个Demo:

@Entry
@Component
struct Page_3058 {
  @State message: string = 'Hello World';
  dialogController: CustomDialogController = new CustomDialogController({
    builder: CustomDialogExample(),
  })

  build() {
    Row() {
      Column() {
        Text(this.message)
          .fontSize(50)
          .fontWeight(FontWeight.Bold)
          .onClick(() => {
            this.dialogController.open()
          })
      }
      .width('100%')
    }
    .height('100%')
  }
}

@CustomDialog
struct CustomDialogExample {
  controller: CustomDialogController = new CustomDialogController({
    builder: CustomDialogExample({}),
  })

  build() {
    Column() {
      TextInput({})
        .fontSize(20)
        .margin({ top: 10, bottom: 10 })
        .expandSafeArea([SafeAreaType.KEYBOARD, SafeAreaType.SYSTEM])
        .borderWidth(0.5)
        .borderRadius(4)
        .height(40)
        .defaultFocus(true)
        .margin({ top: 30, left: 16, right: 16 })
    }
  }
}