Modal height in Internet Explorer

The Modal should use the full page like Chrome or Firefox.

In Internet Explorer 11 the Modal has only the height of the Content.

<div mdbModal #settingsModal="mdbModal" class="modal fade" tabindex="-1" role="dialog" aria-labelledby="myBasicModalLabel" aria-hidden="true">
<div class="modal-dialog modal-fluid modal-full-height modal-full-height-scrollfix" role="document">
  <div class="modal-content">
    <div class="modal-header">
      <button type="button" class="close pull-right" aria-label="Close" (click)="settingsModal.hide()">
        <span aria-hidden="true">×</span>
      </button>
      <h4 class="modal-title w-100" id="myModalLabel">Modal title</h4>
    </div>
    <div class="modal-body">
      ...
    </div>
    <div class="modal-footer">
      <button type="button" mdbBtn color="secondary" class="waves-light" aria-label="Close" (click)="settingsModal.hide()" mdbWavesEffect>Close</button>
      <button type="button" mdbBtn color="primary" class="relative waves-light" mdbWavesEffect>Save!</button>
    </div>
  </div>
</div>