room_list_publication_rules default behavior

[Tychonoff-Space]

In the configuration manual, the documentation for the room_list_publication_rules option states: "...By default, no list is provided, meaning that no one may publish to the room list (except server admins)."

With a fresh setup using the docker matrixdotorg/synapse:latest docker image I found that even as admin I was not able to publish rooms. I was able to resolve this by explicitly defining a rule to match on the admin's user name. I am not sure if the documentation is incorrect, or if some other part of my setup was wrong. I figured in case anyone else runs into this issue I would share.

Steps to reproduce:

Attempt to publish a room to the public room directory using either element or a post request through the API. Post request returns:
{
"errcode": "M_UNKNOWN",
"error": "Not allowed to publish room"
}
Element presents a vaguer "Unable to publish room - There was an error publishing this room" message

Homeserver:

My own homeserver

Server Version:

{"server_version":"1.142.0"}

Installation Method:

Docker (matrixdotorg/synapse)

Database:

postgres

Workers:

Single process