谷歌浏览器-Angular Material mat-select不适用于

Question

Angular Material在chrome浏览器上不起作用，我的代码是

<div class="col-sm-3">
  <mat-select [(ngModel)]="reportFilterObj.VisitorDaylist" placeholder="Select Filter type">
    <mat-option *ngFor="let rpt of ReportType" [value]="rpt">
      {{rpt}}
    </mat-option>
  </mat-select>
</div>

image