Seriously...I'm someone who is known at my school for being incredibly hard working and going the extra mile. I often went in early, stayed late, and actively asked for more to do - more procedures, more patients, would it help if I carry the pager? Hell, on one of my (nonsurgical) rotations, I had a resident approach me and ask me to stop doing so many notes because their attendings were getting concerned that they were taking advantage of the med students and making them do all of their work. And this isn't just my own opinion; as I go through the interview process, I'm gradually finding out from my interviewers that my letters described me as such - to the point where my last interview quoted several of the descriptions of me from my LORs and straight up told me that I would not be able to maintain that through residency and asked what my plans were to take care of myself.
That being said, f*** that noise on your rotation. Your preceptor should not leave before you. If they don't normally have a scribe, then they normally are responsible for staying until all notes are done. This means that your preceptor, by leaving before your notes are finished, is leaving before they normally would get to do so. If they were working you that hard, and then staying after with you until the notes were done and signed (probably splitting them up with you would be more typical) that would be one thing, but what you're describing would not be acceptable for a doc to do with an ACTUAL scribe . I say this having scribed for years before medical school, too...I was left behind by an attending exactly ONE time, and it had been a crazy last-minute trauma when they had an important event to get to, and even then I had to work hard to convince them.
Medicine is a team sport. Asking you to be a part of the team, even when there's a LOT to do, is not abuse. Asking you to take on extra work so that your teachers/mentors can have lighter schedules and also have you help out their colleagues with no obligation to teach you is...not acceptable. Most preceptors are paid additionally for taking on a student. This is because it is supposed to be EXTRA work, not a vacation.
So yeah, as someone who is considered a workaholic by resident and attending surgeons, I would *not* put up with your scenario. Sorry to any SDN poster who underwent a similarly problematic rotation, but that's no excuse for you to perpetuate the cycle by shutting down people questioning whether they're being taken advantage of on their own.