subscriptionPeriod.unit returns both .week AND .day for weekly subscriptions?

After creating a new weekly subscription option, I get inconsistent results for subscriptionPeriod. In local testing with a synced or a un-synced StoreKit file I am getting unit == .week (as expected) whereas in TestFlight I am getting unit == .day. This makes unit.localizedDescriptionsomewhat unusable in the paywall.

Am I missing something? Or is this bug or a limitation of StoreKit and/or TestFlight and/or newly created subscription options?

Affected code (in a custom SubscriptionStoreControlStyle):

    private func priceDisplay(for pickerOption: Configuration.PickerOption) -> String {
        var result = ""
        if pickerOption.introductoryOffer != nil {
            result += NSLocalizedString("then", comment: "") + " "
        }
        result += pickerOption.displayPrice
        if let unit = pickerOption.subscriptionPeriod?.unit {
            result += " / " + unit.localizedDescription
        }
        return result
    }

    private func percentageSaved(for pickerOption: Configuration.PickerOption, allOptions: [Product]) -> Int? {
        guard let subscriptionPeriod = pickerOption.subscriptionPeriod, subscriptionPeriod != .weekly else {
            return nil
        }
        let weeklyOption = allOptions.first { otherOption in
            otherOption.subscription?.subscriptionPeriod == .weekly
        }
        guard let weeklyOption, weeklyOption.price > 0 else {
            return nil
        }
        
        let percentageSaved = 100 - (pickerOption.price / (weeklyOption.price * 52)) * 100
        
        return Int((percentageSaved as NSNumber).doubleValue)
    }