Webauthn example failing in Edge

[gaurav-bagga]

Using Edge
Microsoft Edge 44.18362.449.0
Microsoft EdgeHTML 18.18363

When I am accessing the sample @ https://webauthnsample.azurewebsites.net/ and clicking the 'Register' button it is displaying "Error: ConstraintError". However when I tried same sample in Chrome it starts processing the request without any error.

Note: I do not have any Webauthn or FIDO USB device attached. But still I do not think it should give a ConstraintError.