I can think of a few things. Interns are even less experienced than junior engineers, so they might not know when they're in a bad situation. They also have a

I can think of a few things. Interns are even less experienced than junior engineers, so they might not know when they're in a bad situation. They also have a pretty decent incentive to not make waves, since they're typically being graded on their work, and evaluated for the possibility of a return offer. On the other side of the equation, when I mentored an intern at my company, I was given a great deal of support and training in how to help them have a successful internship. This may or may not be the case for a new manager.