Problem with user status when @'ing them (popup menu)

Description

I’m having an issue with that the sidebar shows the user online, while using the @username and the pop-up list shows the user offline.

In the example above, it’s the first user in both screenshots.
User shows online in the side menu, but offline in the @ menu.

My user is an admin, if that makes any difference.

Server Setup Information

  • Version of Rocket.Chat Server: 6.3.0
  • Operating System: Linux Debian 12.1
  • Deployment Method: Docker 20.10.24+dfsg1, build 297e128
  • Number of Running Instances: 1
  • DB Replicaset Oplog: wiredTiger (oplog Enabled)
  • NodeJS Version: v14.21.3
  • MongoDB Version: 5.0.19
  • Proxy: caddy