DM keeps being marked as unread on launch

[Johennes]

Steps to reproduce

1. From another client invite the user into a new DM

2. The DM invite occurs for the invited user

3. Accept it and notice how the red "!" badge turns into a grey "1" badge (even though I'm already looking at the room)

4. Navigate to another room and back and notice how the grey "1" badge is cleared

5. Reload the page and notice how the room is flagged with a grey "1" badge again. This repeats on every reload.

I took a very brief look into the code and it seemed as if the unread count came from a cached /sync response on launch.

"unread_notifications": {
  "highlight_count": 0,
  "notification_count": 1

Outcome

What did you expect?

The room should not be marked unread after having cleared notifications since there were no new events.

What happened instead?

The room continued being marked as unread on every relaunch.

Operating system

macOS

Application version

develop branch 2022-12-09

How did you install the app?

ran locally

Homeserver

matrix.org (invitee) / element.io (inviter) (but I have seen the same issue with the invitee being on element.io and the inivter on another server)

Will you send logs?

No

[germain-gg]

Duplicate of #23685