从bootstrap应用css类时的PrimeNG日历错误

这是我的模板：

<div class="form-group row">
    <div class="form-group col-md-2">
        <label for="valeur">Valeur</label>
        <input type="number" id="valeur" class="form-control" />
    </div>

    <div class="form-group col-md-5">
        <label for="dateDebut">Date de début</label>
        <p-calendar id="dateDebut" dateFormat="dd/mm/yy" styleClass="form-control" [showIcon]="true"></p-calendar>
    </div>

    <div class="form-group col-md-5">
        <label for="dateFin">Date de fin</label>
        <p-calendar id="dateFin" dateFormat="dd/mm/yy" styleClass="form-control" [showIcon]="true"></p-calendar>
    </div>
</div>

这是结果：

编辑

如果它有任何帮助,这里是生成的HTML：

<div class="form-group col-md-5" _ngcontent-scp-1="">
   <label for="dateDebut" _ngcontent-scp-1="">Date de début</label>
   <p-calendar ng-reflect-show-icon="true" ng-reflect-date-format="dd/mm/yy" ng-reflect-style-class="form-control" styleclass="form-control" id="dateDebut" dateformat="dd/mm/yy" _ngcontent-scp-1="">
      <!--template bindings={
         "ng-reflect-ng-if": "true"
         }-->
      <span ng-reflect-initial-classes="form-control" class="form-control ui-calendar" ng-reflect-raw-class="ui-calendar">
         <input id="dp1467976345328" ng-reflect-value="" class="hasDatepicker ui-inputtext ui-widget ui-state-default ui-corner-left" ng-reflect-raw-class="[object Object]" type="text"><!--template bindings={
            "ng-reflect-ng-if": "true"
            }--><button ng-reflect-icon="fa-calendar" type="button" pbutton="" class="ui-datepicker-trigger ui-button ui-widget ui-state-default ui-corner-all ui-button-icon-only"><span class="ui-button-icon-left ui-c fa fa-fw fa-calendar"></span><span class="ui-button-text ui-c">ui-button</span></button>
      </span>
      <!--template bindings={
         "ng-reflect-ng-if": "false"
         }-->
   </p-calendar>
</div>