I ran into the same problem not using List. Additionally, when I do use List, my detail view will be updated with the data I pass to it but it does not initiate the other variables in it. For example, .task doesn't get triggered to run and @State variables are not set to their default values. It works properly on iPhone but not on iPad. Very frustrating.

It would be nice if Apple could respond to this and explain why it is happening. Makes no sense. Two weeks is long enough to expect a reply. We are all having this problem.