设置数据源时，Nativescript-ui图表不会显示标签[iOS]

Question

在我的应用程序中使用Nativescript ui图表，它在Android上运行良好，但在iOS上，一旦添加数据源，它将不会在任何轴上显示所有标签。我究竟做错了什么？有什么想法吗？

没有数据源：

使用数据源：

<StackLayout *ngIf="series$ | async as series" class="flex-container" orientation="vertical">
  <app-action-bar></app-action-bar>
  <ng-container *ngIf="series?.length > 0; else emptyWidget">
    <Label class="title" textWrap="true" [text]="widget.settings.title" horizontalAlignment="center"></Label>
    <RadCartesianChart tkExampleTitle tkToggleNavButton>
      <ng-container *ngFor="let serie of series">
        <ng-container [ngSwitch]="serie.type">
          <LinearAxis tkCartesianVerticalAxis allowZoom="true" allowPan="true" horizontalLocation="Left" [labelFormat]="'%0.0f'" [lineColor]="serie.color" labelTextColor="#191f3d" labelSize="13" android:lineThickness="3" labelMargin="10" [minimum]="minValue" [maximum]="maxValue"></LinearAxis>
          <DateTimeContinuousAxis tkCartesianHorizontalAxis lineColor="#D8D8D8" labelTextColor="#191f3d" labelSize="11" dateFormat="hh:00" lineThickness="3" labelMargin="10" [minimum]="backwardHour" [maximum]="forwardHour" majorStep="Hour" labelFitMode="Rotate"></DateTimeContinuousAxis>
          <LineSeries tkCartesianSeries [seriesName]="serie.id" *ngSwitchCase="'Line'" [legendTitle]="serie.name + ' - ' + serie.baseUnit" [items]="serie.data" stackMode="Stack" categoryProperty="timestamp" valueProperty="value">
            <Palette tkCartesianPalette [seriesName]="serie.id">
              <PaletteEntry tkCartesianPaletteEntry [fillColor]="serie.color" [strokeColor]="serie.color"></PaletteEntry>
            </Palette>
          </LineSeries>
          <SplineSeries tkCartesianSeries allowZoom="true" allowPan="true" [seriesName]="serie.id" *ngSwitchCase="'Spline'" [legendTitle]="serie.name + ' - ' + serie.baseUnit" [items]="serie.data" stackMode="Stack" categoryProperty="timestamp" valueProperty="value">
            <Palette tkCartesianPalette [seriesName]="serie.id">
              <PaletteEntry tkCartesianPaletteEntry [fillColor]="serie.color" [strokeColor]="serie.color"></PaletteEntry>
            </Palette>
          </SplineSeries>
        </ng-container>
      </ng-container>
    </RadCartesianChart>
  </ng-container>
</StackLayout>