Thread preview and number not correctly displayed inside the thread panel on the first load

[luixxiul]

Steps to reproduce

1. Create a test room
2. Send 1 as a message
3. Send until 5
4. Reply in thread to each message fast (send different messages on each thread)
5. Open the thread list on the right panel

Outcome

What did you expect?

• The number of message for each thread should be 1
• The message preview for each thread should be different

What happened instead?

• The number of the message in each thread is not displayed as 1
• The message previews of the threads is of the last reply for the fifth message

Please see inside the rectangle on the picture.

If you reload the page, you should get the expected list as below:

Operating system

Debian

Browser information

Firefox

URL for webapp

localhost

Application version

develop branch

Homeserver

No response

Will you send logs?

No

[novocaine]

Can you please indicate what homeserver you are using?

[luixxiul]

I'm using a homeserver at matrix.org.

[luixxiul]

@novocaine Please let me know if you need some kind of log, tests, etc. I would be able to help to get some insight on this issue.