Has anyone experienced the issue where switching chats causes the scrollbar to jump back to a very old position?
yes it happens all the time when switching between two chats.
This is a known issue. When you switch between chats, the scroll position resets. Many users are running into this.
Main thread here: Chat view scroll position resets when switching between conversations
The team is aware. There’s no ETA yet, but every report helps with prioritization.