Thanks, the version is enough, and a video isn’t needed since the symptom is clear.
This is a long-known issue with chat scrolling when switching between threads or tabs. A lot of user report it, for example here Cursor scroll chat history to unpredictable place when switching between chats and here Scroll position when changing agent tabs. I can’t share an ETA for a fix.
For now, as a workaround, use the “Scroll to bottom” button in the bottom-right corner of the chat pane. It jumps you back to the end of the thread instantly.
One note: in newer builds with the updated chat renderer, the behavior changes a bit. When you switch, the view tries to stick to your last message instead of always going to the very bottom. So you might see different behavior between builds. If you notice it’s more stable in the latest versions, or worse, reply here. That’s helpful.