list组件无法滚动到底部

@Entry 
@Component 
struct TextExample6 { 
  build() { 
    Column() { 
      List() { 
        LazyForEach(this.mHistoryRecordCtrl.getExpDataSource(), (item: LooseObject, index?: number) => { 
          ListItem() { 
            ExpListItem({ item: item }) 
          } 
        }, (item: LooseObject, index?: number) => { 
          return item.id; 
        }) 
      } 
      .width('100%') 
      .sticky(StickyStyle.Header) 
      .scrollBar(BarState.Auto) 
 
      if (this.mHistoryRecordCtrl.getIsEmptyView()) { 
        EmptyView(); 
      } 
    } 
    .width('100%') 
    .layoutWeight(1) 
    .padding({ left: $r('app.float.digit_panel_padding'), right: $r('app.float.digit_panel_padding') }) 
  } 
}