I pressed enter while the cursor was on the Display Name’ field. Then I ran the app in the simulator, closed the app, and the new name was displayed.
Then, I picked up my phone to re-build the app there and the new name was already showing! I know it
wasn’t there yesterday, when I did my last build.
I decided to experiment. I changed the Display Name again and did not hit Enter. It changed just fine in the simulator. Re-built on my phone and the new name was there.
I think there are gremlins in my Mac that are trying to make me look like an idiot. They’re doing a good job.