Increase lane change timeout / disable lane change cancellation after initiation
With EAP, when you press the blinker, Auto lane change is initiated. The lane change times off after a few seconds, which is often the case even with medium incoming traffic. Moreover, it cancels an initiated lane change after starting to move over and leaving the center line, which is very dangerous behaviour since you indicated the car in back of you that you want to change lane. Autopilot cancels this started lane change and swipes back to the original line after a short timeout.
Disable the timeout or increase the timeout to at least 10 seconds.
Especially, don't timeout if the lane change is physically initiated!