Jira webhooks for events - url syntax

G’day,
I’ve got an ACE add-on that responds to Jira events.

As an example, I’ve configured the connect descriptor json as follows:

...
"webhooks": [
  {
    "event": "project_updated",
    "url": "/web-hooks/project_updated"
  },
  ...
],
...

What I noticed though is that when I trigger such event on the UI, i.e. I update a project, my ACE doesn’t pass through the endpoint stated above but it’s trapped by that defined at node_modules/atlassian-connect-express/lib/index.js:142 (with atlassian-connect-express v. 11.0.0)

On the contrary, if I add a trailing ? to my endpoint URL, I get the expected behaviour.

Is that by design? And if so, can you please point me to the documentation page where this behaviour is reported and explained?

Best regards
Cheers