I am facing the same issue with a new app created today. It always shows "Sign Up Not Completed" after signing with Face ID. I try another app with "Sign in with Apple" that I created several days ago, the feature works as expected. Does anyone find any solution?

I check it again, it still not working.

It works well on my app now. It seems Apple solve the issue on their side.

It finally works on the iOS 16 simulator and XCode 14 Beta 3.