Webhooks in Subscriber server role

Hi… I have a site that have moved from single server hosting to load balancing with a dedicated editor instance. We are using webhooks quite a lot… From the editor-instance everything is fine. On the frontends, end users can log in and upload files, and we have a webhook that fires we they do that. But these webhooks are not fired any longer. In my trial and error, I set my local server role to Subscriber, and just as I suspected, the webhook didn’t fire… removed the role and it fired again…

Is this a bug or is it intentional? And is there a way around this?

/ulrich