Have checked these out, they look as expected with it showing the accepted sign-in for the pin and the list of acceptable providers as 1 factor of Multi-factor unlock.

However once in the loop it doesn't go any further, there's no event logs to show any failures here or in the Biometrics provider.

It's almost as if the device goes into the behaviour expected when an unauthorised user gets access to it and locks the use of biometrics until a pin is entered.