App Subscription "Confirm with Apple Device" UI

My tvOS app includes the purchase of subscriptions, and I am updating the code with Storekit 2.0. I have seen other apps that present the "Confirm with Apple Device" UI upon selection of a product, but for me I only ever see an alert confirming the purchase.

I have tested this using Xcode storekit data and a sandbox account. I have also attempted using Storekit views and passing the UIWindowScene to the purchase(confirmIn: ) parameter, but neither made any difference. Is there some limitation that prevents that UI from showing in debug builds?

"Confirm with Apple Device" is for production flow only.

App Subscription "Confirm with Apple Device" UI
 
 
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