[Sandbox - Xcode] Delegate Callback - IsActive returns True when Subscription Expired

Hello,

Using 

    func isProGranted(customer: CustomerInfo) -> Bool {

        if let entitlement = customer.entitlements["PRO"] {

            return entitlement.isActive
        }
        return false

    }

In the Delegate Callback 

extension SubscriptionViewModel:PurchasesDelegate {


    func purchases(_ purchases: Purchases, receivedUpdated customerInfo: CustomerInfo) {
        self.isPRO = manager.isProGranted(customer: customerInfo)
    }

}

The problem is, it returns true when we Cancel Subscription or when it is automatically expired