When attempting use SSO with MFA to log into our IGEL desktop we use Yubikeys and WebAuthn to create passkeys with Keycloak. Currently SSO uses igel-minibrowser in order to display the login page for the desktop. This minibrowser does not support WebAuthn.
I suggest allowing the minibrowser to support WebAuthn or allow the SSO to use a different web browser (Chromium, FireFox, Edge) that nativly support WebAuthn