I had a random lock up of my MBP the other day and when I rebooted, I could not Touch ID to logon anymore. I checked the Touch ID settings and all my saved prints were gone! Strange. I’ve set them up again, but that’s all a bit weird and annoying.
This didn’t happen after a software update or anything, just a random lockup and reboot. Something to look out for, be keen to know if anyone else has had a similar issue.