HarmonyOS 鸿蒙Next Swiper嵌套时无法定位

HarmonyOS 鸿蒙Next Swiper嵌套时无法定位 一级Swiper中包含10个item，每个item里又有一个Swiper其中也是包含10个item。先需要点击某个按钮后定位，比如需要父级切换到第8个item并且当前子Swiper要切换到第4个item。现在遇到的问题是打印的子级Swiper需要定位的index是正常的，但是定位不成功。以下是核心逻辑:

父级:

// 当前选中的试题id(每次滑动时不会更新的)
@Provider() selectQuesId: number = 0 
// 当前选中的index(与试题id一一对应)
@Local selectIndex: number = 0 

/** 
* 选中的试题更改后同步选中的index 
*/ 
@Monitor('selectQuesId') watchSelectQuesId() {
  this.selectIndex = this.viewModel.getParentIndexByQuesId(this.selectQuesId) ?? this.selectIndex
  error('------------定位1:' + this.selectIndex + '---------' + this.selectQuesId)
}

Swiper(this.parentSwiperController) { 
  LazyForEach(this.viewModel.quesList, (item: Ques) => { 
    QuesExamPaper({
      quesId: item.quesId,
      nextQues: () => { 
        this.showNextQues()
      }
    })
  }, (item: Ques) => item.quesId?.toString())
}
.layoutWeight(1)
.loop(false)
.index($$this.selectIndex)
.cachedCount(1)
.indicator(false)

子级:

@Local selectIndex: number = 0 // 当前选中的试题id
@Consumer() selectQuesId: number = 0 

@Monitor('selectQuesId') watchSelectQuesId() { 
  this.selectIndex = this.quesDetails?.childList?.findIndex((item) => item.id === this.selectQuesId) ?? this.selectIndex
}

Swiper(this.swiperController) { 
  ForEach(this.quesDetails?.childList, (item: QuesDetailEntity) => { 
    QuesChoicePaperV2({
      quesDetails: item,
      nextQues: () => { 
        if (this.selectIndex === (this.quesDetails?.childList?.length ?? 0) - 1) { 
          this.nextQues?.()
        } else { 
          this.swiperController.showNext()
        }
      }
    })
  }, (item: QuesDetailEntity) => item.id?.toString())
}
.nestedScroll(SwiperNestedScrollMode.SELF_FIRST)
.cachedCount(1)
.loop(false)
.indicator(false)
.index($$this.selectIndex)