I've had my phd since August and have gotten through 2 whole semesters as a college professor. Despite that, it didn't "feel" official until a few days ago. This was when my chair approached me in regards to a student complaint.
I rolled my eyes, fully well knowing the who and why.
The specifics of this situation don't matter. A student didn't like a decision I made and complained to the chair. The chair asked about it (2weeks later) and saw no reason to address anything beyond that. Situation over.
Just feels like a right of passage.