HarmonyOS List停止滑动回调不准确

@Entry  
@Component  
struct ListDemo {  
  private arr: number[] = [];  
  private scrollerForScroll: Scroller = new Scroller();  
  private timer: number = 0  
  
  aboutToAppear(): void {  
    for (let i = 0; i < 100; i++) {  
      this.arr.push(i)  
    }  
  }  
  build() {  
    Column() {  
      List({ space: 10, scroller: this.scrollerForScroll }) {  
        ForEach(this.arr, (item: number) => {  
          ListItem() {  
            Text("ListItem" + item)  
              .width("100%")  
              .height("100%")  
              .borderRadius(15)  
              .fontSize(24)  
              .textAlign(TextAlign.Center)  
              .backgroundColor(Color.White)  
          }.width("100%").height(100)  
        }, (item: number) => item + '')  
      }  
      .width("100%")  
      .scrollBar(BarState.Off)  
      .onScrollStart(() => {  
        clearTimeout(this.timer)  
      })  
      .onScrollStop(() => {  
        this.timer = setTimeout(() => {  
          console.log('test onScrollStop')  
        }, 500)  
      })  
    }  
    .width('100%')  
    .height('100%')  
    .backgroundColor(0xDCDCDC)  
  }  
}