Ah alright fair, well I thought this might be the reason. It's not really a matter of line not stopping at scheduled end, more like it would be I think more satisfying if the service ended on any last station, instead of allowing you to drive for another few meters.
Hey I got a question, I finished a few routes in MP, however the service never ends at a station, but on the way again. Is that a bug or it has some purpose? Feels kinda weird when I do not reach the last station yet and got message scenario completed.