`NEHotspotNetwork.fetchCurrent` not working after connection to a network with `NEHotspotConfigurationManager`

Hey,

I want to connect to an Wifi network setup by my IoT device.

I am using the following code to do so:

public class WifiUtil: NSObject{
    private func connect(...) {
        if #available(iOS 11.0, *) {
            let configuration = initHotspotConfiguration(ssid: sSSID, passphrase: sPassword, security: sSecurity)
            configuration.joinOnce = bJoinOnce ?? false

            NEHotspotConfigurationManager.shared.apply(configuration) { [weak self] (error) in
                guard let this = self else {
                    print("WiFi network not found")
                    result(false)
                    return
                }
                this.getSSID { (sSSID) -> () in
                    if (error != nil) {
                        if (error?.localizedDescription == "already associated.") {
                            print("Connected to '\(sSSID ?? "<Unknown Network>")'")
                            result(true)
                        } else {
                            print("Not Connected")
                            result(false)
                        }
                    } else if let ssid = sSSID {
                        print("Connected to " + ssid)
                        // ssid check is required because if wifi not found (could not connect) there seems to be no error given
                        result(ssid == sSSID)
                    } else {
                        print("WiFi network not found")
                        result(false)
                    }
                }
            }
        } else {
            print("Not Connected")
            result(nil)
            return
        }
    }

    private func getSSID(result: @escaping (String?) -> ()) {
        if #available(iOS 14.0, *) {
            NEHotspotNetwork.fetchCurrent(completionHandler: { currentNetwork in
                result(currentNetwork?.ssid);
            })
        } else {
            if let interfaces = CNCopySupportedInterfaces() as NSArray? {
                for interface in interfaces {
                    if let interfaceInfo = CNCopyCurrentNetworkInfo(interface as! CFString) as NSDictionary? {
                        result(interfaceInfo[kCNNetworkInfoKeySSID as String] as? String)
                        return
                    }
                }
            }
            result(nil)
        }
    }
}

The code basically calls NEHotspotConfigurationManager.shared.apply and the checks if WiFi network is same as requested with NEHotspotNetwork.fetchCurrent. This is as per the docs:

• Apple Docs for apply(_:completionHandler:)

  The system calls your completion handler when it has applied the Wi-Fi level configuration. A successful configuration doesnʼt mean the device has joined that Wi-Fi network. To get the current Wi-Fi state, call fetchCurrent(completionHandler:).

I am getting the following error while fetching the SSID of current network: [] NEHotspotNetwork nehelper sent invalid result code [1] for Wi-Fi information request. But the phone connects to the network successfully.

I added some delay (incremental 1s upto 15s) before checking - it works sometimes but not always.

Strangely, when I make the connect request twice - it always works the second time.

Any help to fix this will be appreciated. Thanks in advance.