Comma AI deliberately made lane change require a small bit of human intervention for safety reasons. The human hits the blinker and gives the wheel a tiny nudge in the direction, and then openpilot will complete the lane change and resume driving in the new lane.
The theory is that at the current ability of software like Tesla and Comma has, it's probably a good idea for a human to be paying more attention during a lane change maneuver. Comma is of the opinion that the level of autonomy Teslas have is probably unnecessarily unsafe. Comma cares a lot about safety (e.g. they have much more sophisticated driver monitoring than Tesla).
Lane change here: https://www.youtube.com/shorts/xm8DRwvLObQ
Since openpilot is open source software, there are of course forks that exist that remove these safety limitations and will lane change automatically.