RemoteEndPoint variable not avaiable on AuthenticationFailure event

[alexbcberio]

I want to get notified when someone fails authenticated using Gotify, I am using the Gotify AuthenticationFailure template.

If I try to log in setting a incorrect password I get the notification, but the RemoveEndPoint variable is not being set. Here's a screenshot of the notification:

As you can appreciate there is no IP address, I have already verified that the template is correctly set up.

{
    "extras": {
        "client::display": {
            "contentType": "text/markdown"
        }
    },
    "title": "🚫 Authentication Failure 🚫",
    "message": "**User:** {{Username}}\n\n**Client:** {{App}}\n\n**Device:** {{DeviceName}} \n\n**Client IP:** {{RemoteEndPoint}}",
    "priority": {{Priority}}
}

I check "Send All Properties (ignores template)" on the plugin and open the logs after triggering the event to see the request (obviously fails).

[17:16:50] [INF] Authentication request for <redacted> has been denied (IP: XXX.XXX.X.XXX).
[17:16:50] [WRN] Notification failed with POST request to https://<redacted>/message?token=<redacted>: {"ServerId":"<redacted>","ServerName":"<redacted>","ServerVersion":"10.9.11","ServerUrl":"","NotificationType":"AuthenticationFailure","App":"Jellyfin Web","Username":"<redacted>","UserId":"00000000000000000000000000000000","AppVersion":"10.9.11","DeviceId":"<redacted>","DeviceName":"Chrome","Priority":8}

The RemoteEndPoint variable is not available in all properties, so I guess something is wrong in the plugin itself.

PS, I am running Jellyfin over Docker with nginx as a reverse proxy using the template on Jellyfin docs.