https://finance.yahoo.com/news/apple-iphone-x-couldn-t-181910601.html
I saw another story a while back about how family members were able to unlock each others iPhone X also. Seems like they should have found a way to keep the figure print reader in the phone while they tried to transition to Face ID.
This story reminded me of problems with the xbox kinect when it was first released not being able to see people who had a darker skin color. Obviously a tech issue but does make you wonder how these things are tested before being released.