I am a PhD student. In the past I have met with an assistant professor for some general advice about my research, both times he has made off the cuff comments on my lack of competence as a researcher and overall career suitability in academia. During my continuation, he made further comments in this area. I prepared for 3 weeks solid for my continuation (or transfer or confirmation, in my case, it's like the defense of the first paper) and it went terribly. I can take constructive criticism and I welcome it, so as to better my paper. However, his behaviour I feel is inappropriate, as the focus should be my paper, and not my personal qualities.
I am not sure what to do, if I should even do anything at all. In general, I consider my PhD progress to be very good, and my supervisor as far as I know shares the same sentiment.
I'm cautious to respond to the assistant professor, because he tells me I am being defensive, but then I am cautious of being too silent because he tells me I am not contributing enough.
I have not spoken to my supervisor since my continuation or told him about my past encounters with this professor. Do I express my disappointment and confusion in our next meeting, or do I just leave it? I am lost on what to do, and I feel very deflated now.