Channel named "." cannot be joined

Description:

Channel called . can be created but it cannot be joined or returned after navigating away from it.

Just a stupid issue we encountered, but nevertheless it is best to report it. It might indicate some other issue with escaping channel names etc.

Steps to reproduce:

1. Create a public channel called . with web client
2. Search for the channel with another user and try to join the channel

Expected behavior:

You can join the channel as usual

Actual behavior:

In the url-bar the channel path shows as /channel/ and not /channel/.

Typing in the correct url does not have any effect, as the address turns into /channel/ again.

Server Setup Information:

• Version of Rocket.Chat Server: 7.1.0
• License Type: Enterprise
• Number of Users: 500+
• Operating System: RHEL8
• Deployment Method: tar
• Number of Running Instances: 4
• DB Replicaset Oplog: Yes
• NodeJS Version: 20.18.0
• MongoDB Version: 6.0

Client Setup Information

• Desktop App or Browser Version: Any browser

Start by reproducing the web client flow: create a public channel named . and try to find or join it as another user. Trace how the channel name is represented in the /channel/ URL and verify the behavior across navigation. Done means the channel can be joined and the URL retains the . name.