We discovered an Edge only issue with the FileUpload.
The error occurs immediately after choosing a file.
https://codesandbox.io/s/jzn0r35319
Edit: Same Error with Versoin 2.0.1 https://codesandbox.io/s/jz3zov6x7y

Version: 2.0.0-rc.1 & 2.0.1
Edge: 42.17134.1.0 (Also tested with 40.15063.0.0)
Thanks.