Trees, zCirca, russel15150:
Thanks guys for confirming that your N5's also require a password after restart/booting-up. Further to this, passwords are also now the only way to get into the "Fingerprint" functionality as well (fingerprints used to work).
This is all OK, with two minor disconnects from a human factors perspective. When I make the following settings...
Screen lock type: Fingerprints
Fingerprint unlock: On
... I expect to be able to *unlock my phone" with fingerprints.
The term "Unlock" is even used in the on-screen directions after restart/boot-up.
I am OK with this apparently new policy of using a password to unlock my phone, but the UI is a bit confounding IMO.
Maybe there's still something more to learn on this front.