It does if you use microg or authnkey or keepassdx. It's Play Services that does...

		Borealid 15 days ago \| parent \| context \| favorite \| on: Don't use passkeys for encrypting user data It does if you use microg or authnkey or keepassdx. It's Play Services that does not support this combination, likely to shepherd you towards Google acoount usage. Alternate Android apps work fine.

yeah just installed it, it's awesome!