Is StoreKit.Transaction.currentEntitlements down at the moment?

Calling StoreKit.Transaction.currentEntitlements today just doesn't return. It just sits there.

for await result in StoreKit.Transaction.currentEntitlements {
            switch result {
            case .verified(let transaction):
                currentTransaction = transaction
                
            case .unverified(let transaction, let error):
                currentTransaction = transaction
            }
        }

The for loop never starts.

This is using a Sandboxed user that made a renewal subscription purchase. Everything was working fine yesterday. Nothing on my end has changed since then.

Is something wrong with StoreKit?