HarmonyOS 鸿蒙Next TextPicker只能显示3行是什么原因？？

方便给个能复现问题的最小demo吗，包括颜色资源。

我用你的大概的样式写出来，能正常显示5个可见选项，我有点怀疑是不是颜色的问题。

下面是我的写法，没啥问题，把你的能复现的最小demo发出来一起分析下

@Entry
@Component
struct Index {
  items: SinglePickerItem[] = []

  aboutToAppear(): void {
    for (let i = 0; i < 100; i++) {
      this.items.push(new SinglePickerItem(`${(i + 1)}`, i))
    }
  }

  build() {
    Column() {
      RelativeContainer() {
        Text("title")
          .width('100%')
          .height(42)
          .textAlign(TextAlign.Center)
          .fontSize(18)
          .fontColor(Color.Red)
          .fontWeight(FontWeight.Bold)
          .backgroundColor(Color.Black)
          .borderRadius({
            topLeft: 14,
            topRight: 14,
            bottomLeft: 0,
            bottomRight: 0
          })
        TextPicker({ range: this.items })
          .onChange((value: string | string[], index: number | number[]) => {
            console.error('Picker item changed, value: ' + value + ', index: ' + index)
          })
          .width('100%')
          .height('100%')
          .divider({ color: Color.Red })
          .disappearTextStyle({ color: Color.Red, font: { size: 20, weight: FontWeight.Normal } })
          .textStyle({ color: Color.Red, font: { size: 20, weight: FontWeight.Normal } })
          .selectedTextStyle({ color: Color.Red, font: { size: 30, weight: FontWeight.Bolder } })
          .gradientHeight('200%')
          .alignRules({
            center: { anchor: '__container__', align: VerticalAlign.Center },
            middle: { anchor: '__container__', align: HorizontalAlign.Center }
          })

        Text('um')
          .width('auto')
          .height('auto')
          .textAlign(TextAlign.Center)
          .fontSize(20)
          .fontColor(Color.Red)
          .fontWeight(FontWeight.Bold)
          .alignRules({
            center: { anchor: '__container__', align: VerticalAlign.Center },
            right: { anchor: '__container__', align: HorizontalAlign.End }
          })
      }.width('100%')
      .layoutWeight(1)
      .padding({ left: 20, right: 20 })
      .borderRadius({
        topLeft: 0,
        topRight: 0,
        bottomLeft: 14,
        bottomRight: 14
      })
    }.height(280)
    .alignItems(HorizontalAlign.Center)
  }
}

class SinglePickerItem {
  text: ResourceStr
  value: number

  constructor(text: ResourceStr, value: number) {
    this.text = text
    this.value = value
  }
}