Error: registration failed: clientData origin did not match expected origin

[mathiasconradt]

Using my FIDO U2F token, I get this error when trying to register. Both on Chrome and Firefox on Ubuntu 18 LTS / Gnome:

Failed!
Error: registration failed: clientData origin did not match expected origin

after my token flashes and I press the button.

(Using this token: https://www.key-id.com/key-id-secure-online-accounts/)

Registration and login with the same token on https://webauthn.io on the other hand works fine.

[jdhoek]

I'm getting the same error.

Firefox on Ubuntu 18.04 with a Yubikey FIDO U2F token.

https://webauthn.io works fine for me too.