Filepicker window infinitely reopens after opening custom file input in MS Edge

Created by: rhinoman

Attempting to use the Bootstrap custom file input with MS Edge on Windows 10 (using Bootstrap v4-alpha2):

<label class="file">
  <input type="file" id="file">
  <span class="file-custom"></span>
</label>

Works well enough in other browsers I've tried (FF, Chrome, Vivaldi), but in MS Edge clicking the "Browse" button opens up a Windows file dialog that cannot be dismissed. Selecting a file or canceling the dialog results in the dialog closing and then reopening (ad infinitum).