Using Xcode (and Simulator) version 12.5.1.
I am required to implement Sign in with Apple in order to have my app approved, however when testing on a simulator, after the credentials are entered, a spinner/loading icon appears, and doesn't go away. I added some debug code, and found that the handler for didCompleteWithAuthorization is not being called. If I click off of the Sign in with Apple view, the didCompleteWithError handler is called, however, so I feel the implementation is correct.
Any ideas?