I've spent my introverted time analyzing these types of social interactions and misunderstandings. I have come to realize that when you offer people a blank slate, they paint their fears on it. It was especially interesting to me to learn that was a specific technique used in Freud's psychotherapy. In my limited understanding of it, I read that the therapist was to express no personality or mannerism, so that the patient could project onto them the issue they have with other people. Then the therapist and patient work through the original problem. A strongly introverted person is going to have trouble filling in everyone's blanks during interactions, so I adjust by limiting my interactions. I also make an effort not to do the projecting myself.
On a vaguely related note to the thread: If you want to overcome the need to have other people like you, teach lots of students. It's precious near impossible to please everyone when in authority. No matter what you do someone is going to complain. If you work with enough of them, it naturally becomes depersonalized. No one has the energy to care on an individual basis if 900 people like them.