IE 11 throws no events when dragging folders

[AaronV]

When dragging and dropping a folder in browsers other than IE11, I get an add event that I can tie logic too. Then I can alert the user that folder dragging probably isn't supported in their browser (only Chrome sort of). However when I drag a folder in IE11, there are no events fires so I have no way of letting the user know that's not supported.

What's odd is that the uploader does seem to be interrupting normal browser behavior by NOT trying to open the dragged folder. So I know the uploader is doing something with the browser, just not throwing events.

This behavior can be seen in IE11 with your uploader example page: http://blueimp.github.io/jQuery-File-Upload/