Thread reply previews not showing consistently across users in Rocket.Chat

[Anxhul10]

Description:

I tested thread reply previews between two accounts and found that the preview indicators (e.g. “X replied to this thread”) do not appear consistently for all users.

Steps to reproduce:

1. I used two Rocket.Chat accounts: Anshul and Dummy.

2. In a public channel, I created Thread 1 and Thread 2 (by replying to two separate messages).

3. Then I performed the following:

   Thread 2:

   Dummy replied: th2 hi 1

   Anshul replied: th2 hi 2

   Thread 1:

   Anshul replied: th1 hi 1

   Dummy replied: th1 hi 2

Expected behavior:

All users should see thread reply previews under the original message, regardless of who replied or viewed it. The previews should always appear if any reply exists.

Actual behavior:

As Anshul:

✅ I see reply previews for both Thread 1 and Thread 2, showing all replies.

As Dummy:

✅ I only see preview for:

    My own reply to Thread 2

    Anshul's reply to Thread 1

❌ I do not see:

    Anshul’s reply to Thread 2

    My own reply to Thread 1

Server Setup Information:

• Version of Rocket.Chat Server: open.rocket.chat
• License Type:
• Number of Users:
• Operating System:
• Deployment Method:
• Number of Running Instances:
• DB Replicaset Oplog:
• NodeJS Version:
• MongoDB Version:

Client Setup Information

• Desktop App or Browser Version: Firefox 136.0.1 (64-bit)
• Operating System: Ubuntu 24.04.2 LTS

Additional context

Relevant logs:

[dhairyashiil]

I believe the reason for the different behaviors is the following button: Also send to channel.

It seems that from the account 'Anshul', in both instances, you opened the thread when there were no replies, and the Also send to channel button was likely checked by default.

Could you please redo the testing with this in mind and let us know the results?

[Anxhul10]

Hey thank you for your input !
I tried enabling and disabling the also send to channel button and it solves the issue . I also came across a preference under Settings > Preferences called Also send thread message to channel behavior.

It appears that the Also send to channel checkbox in the message box overrides the preference set in Also send thread message to channel behavior (default).

It would improve the user experience if:

• When the preference Also send thread message to channel behavior is enabled (i.e., selected by default),
• And the user manually selects the Also send to channel checkbox in the message box,

A toast notification is shown saying something like:

“This option is already enabled by default in your preferences.”

This would help avoid confusion and prevent users from selecting an already-active setting unnecessarily.

what do you think ? should I update the issue .

[Anxhul10]

viewing thread from other user

Viewing the same thread from the thread creator’s view: