HarmonyOS Swiper是否不销毁不可见的item

Swiper使用默认的缓存页面 个数，但是我发现item页面无论滑到第几个或者都不可见了，都不会走aboutToDisappear()方法，是否都不会销毁不可见的 itemView，这样不会造成内存溢出吗？

Swiper(this.swiperController) {
  ForEach(this.wordList, (itemBeanStr: WordList, index: number) => {
    WordCardItem({
      palyAudio: this.playAudio,
      pageIndex: index,
      itemBean: itemBeanStr,
      bookType: this.bookType,
      audioPlaying: this.audioPlaying,
      selectedPage: this.selectedIndex - 1
    })
  }, (itemBeanStr: WordList, index: number) => index + "")
}.index(this.selectedPage).indicator(false).width('100%').alignRules({
  top: { anchor: 'tv_page', align: VerticalAlign.Bottom },
  bottom: { anchor: '__container__', align: VerticalAlign.Bottom }
})