ProcessPurchase never called on app restart for Pending purchases,Should IAP ProcessPurchase be called in the Editor?

I'm trying to implement automatic transaction recovery for interrupted transactions.

Everyt$$anonymous$$ng works fine in the happy flow where I send InitiatePurchase and shortly after I receive a ProcessPurchase call.

However, restarting the app never triggers ProcessPurchase again. I'm returning PurchaseProcessingResult.Pending as the documentation clearly states: The application is still processing the purchase and ProcessPurchase will be called again the next time the Application starts, unless the ConfirmPendingPurchase function of IStoreController is called.

It is never called however. Neither in the Editor, nor on device(s). Am I missing somet$$anonymous$$ng?

Here is some test code I setup for t$$anonymous$$s:

 public class IAPTest : MonoBehaviour, IStoreListener
 {
     public bool useFakeStore;
     
     private IStoreController _storeController;
 
     private void Start()
     {
         Debug.Log($"Initializing IAP Service");
 
         if (useFakeStore)
             StandardPurchasingModule.Instance().useFakeStoreUIMode = FakeStoreUIMode.DeveloperUser;
             
         var builder = ConfigurationBuilder.Instance(StandardPurchasingModule.Instance());
         builder.AddProduct("some_product_id", UnityEngine.Purchasing.ProductType.Consumable);
 
         UnityServices.InitializeAsync(); 
         UnityPurchasing.Initialize(t$$anonymous$$s, builder);
     }
     
     public void OnInitializeFailed(InitializationFailureReason error)
     {
         Debug.Log($"OnInitializeFailed {error}.");
     }
 
     public void OnInitialized(IStoreController controller, IExtensionProvider extensions)
     {
         Debug.Log($"OnInitialized.");
         _storeController = controller;
     }
     
     public void OnPurchaseFailed(Product product, PurchaseFailureReason failureReason)
     {
         Debug.Log($"OnPurchaseFailed {failureReason} (click for more info):" +
                                     $"\n{JsonConvert.SerializeObject(product)}");
     }
 
     public PurchaseProcessingResult ProcessPurchase(PurchaseEventArgs purchaseEvent)
     {
         var product = purchaseEvent.purchasedProduct;
         Debug.Log($"ProcessPurchase (click for more info):" +
                                     $"\n{JsonConvert.SerializeObject(product)}");
 
         return PurchaseProcessingResult.Pending;
     }
     
     [ContextMenu("Buy")]
     public void Buy()
     {
         var sku = _storeController.products.all[0].definition.id;
         _storeController.InitiatePurchase(sku);
     }
 }