Threaded message counter wrong in timeline

[kittykat]

Steps to reproduce

1. Start a thread in a public room
2. See one message appear in the right panel but message counter says "2" in the timeline

Outcome

What did you expect?

Timeline says 1 message in thread, right panel shows one message

What happened instead?

Timeline says 2 messages in thread (wrong), right panel shows one message (right)

Operating system

No response

Browser information

Chromium 108.0.5359.94 (Official Build) Arch Linux (64-bit)

URL for webapp

develop.element.io

Application version

Element version: c473cb6-react-c3809d3afa7d-js-8d018f9c2d33 Olm version: 3.2.12 and yesterday's

Homeserver

matrix.org

Will you send logs?

No