Not Receiving Notifications on iOS devices from Azure Notification Hub using a Custom Template

Question

I have two registered both Android and iOS devices on my Notification Hub with custom template registrations.
When I send a notification using a custom template "newJobRequestTemplate", Android receives it and displays it, but iOS does not.
Sending a notification using the custom template "textMessageTemplate" works fine on both devices.

My iOS device installation (registration) looks like this:

{  
    "installationId": "ab1ad748**********************",  
    "userId": "1f429963",  
    "pushChannel": "6EB8E**************************",  
    "pushChannelExpired": false,  
    "platform": 2,  
    "expirationTime": "9999-12-31T23:59:59.9999999Z",  
    "tags": [  
        "userId:1f429963"  
    ],  
    "pushVariables": null,  
    "templates": {  
        "newJobRequestTemplate": {  
            "body": "{\"aps\":{\"template\":\"newJobRequestTemplate\",\"title\":\"$(title)\",\"date\":\"$(date)\",\"address\":\"$(address)\"}}",  
            "headers": null,  
            "expiry": null,  
            "tags": [  
                "newJobRequestTemplate"  
            ]  
        },  
       "textMessageTemplate": {  
           "body": "{\"aps\":{\"template\":\"textMessageTemplate\",\"alert\":\"$(message)\",\"title\":\"$(title)\"}}",  
           "headers": null,  
           "expiry": null,  
           "tags": [  
                "textMessageTemplate"  
           ]  
       }  
    },  
    "secondaryTiles": null  
}  

When I do a Test Send from Azure Portal to the Tag expression: newJobRequestTemplate with the payload below, only Android receives it, iOS doesn't

{  
    "title":"New job available",  
    "date":"July 16",  
    "address":"New York"  
}  

But when I do a Test Send from Azure Portal to the Tag expression: textMessageTemplate with the payload below, both Android and iOS receive it no problems.

{  
    "title":"Test title",  
    "message":"Test message"  
}  

Here's the code I have in my iOS project

AppDelegate.cs

 public override bool FinishedLaunching(UIApplication app, NSDictionary options)  
        {  
            global::Xamarin.Forms.Forms.Init();  
            Xamarin.FormsMaps.Init();  
  
            UNUserNotificationCenter.Current.Delegate = new iOSNotificationReceiver();  
  
  
            if(UIDevice.CurrentDevice.CheckSystemVersion(8,0))  
            {  
                var pushSettings = UIUserNotificationSettings.GetSettingsForTypes(  
                                    UIUserNotificationType.Alert | UIUserNotificationType.Badge | UIUserNotificationType.Sound,  
                                    new NSSet());  
  
                UIApplication.SharedApplication.RegisterUserNotificationSettings(pushSettings);  
                UIApplication.SharedApplication.RegisterForRemoteNotifications();  
            }  
            else  
            {  
                UIRemoteNotificationType notificationType = UIRemoteNotificationType.Alert | UIRemoteNotificationType.Badge | UIRemoteNotificationType.Sound;  
                UIApplication.SharedApplication.RegisterForRemoteNotificationTypes(notificationType);  
            }  
             
            LoadApplication(new App());  
  
            return base.FinishedLaunching(app, options);  
        }  

And iOSNotificationReceiver.cs

    public class iOSNotificationReceiver : UNUserNotificationCenterDelegate  
    {  
        // Called if app is in the foreground.  
        public override void WillPresentNotification(UNUserNotificationCenter center, UNNotification notification, Action