Leave button for channels is available even if the user isn't subscribed to the channel

[ppl-call-me-tima]

Description:

The room / channel information page that allows the user to see the channel avatar, hide or leave the channel also provides the Leave option visible to the user, even when they haven't joined / subscribed to the channel.

Steps to reproduce:

1. Navigate to a channel that you aren't a part of:
   • go to Directory
   • from the list, select a channel you aren't a part of
2. click on the channel name / Room Information button
3. the Leave button is available for a click

Expected behavior:

The Leave button shouldn't be available as it is not useful to the user who hasn't subscribed to the room in the first place.

Actual behavior:

Leave button is visible along with the Join button as well:

Server Setup Information:

• Version of Rocket.Chat Server: 7.5.0-develop
• License Type: Starter
• Number of Users: 2
• Operating System: Linux x64 [5.15.167.4-microsoft-standard-WSL2]
• Deployment Method: tar
• Number of Running Instances: 1
• DB Replicaset Oplog: true
• NodeJS Version: v22.13.1
• MongoDB Version: 7.0.5

Client Setup Information

• Browser Version: Chrome 134.0.6998.178
• Operating System: Windows 11 x64

Further Discussion

Fix proposed: #35670

[Swatibharti46]

@ppl-call-me-tima I would like to work on this issue