Irish Green Building Council interview questions

I applied to the role and within a week received an invitation for an interview at a specific time. The interview questions were quite difficult and niche for first round interview. It was a very strange interview. It was a panel interview in person and 2 of the interviewers were polite. The other interviewer was very rude and seemed so uninterested, this person also made weird (and judgemental) faces when I would answer the questions asked by the other 2 interviewers..this really put me off. At one point I looked directly at this person while answering a question the other 2 interviewers posed so they would know I knew they were being very rude. Overall it gave me quite a bad impression of that person, (and I wouldn't like to work under that person) the other 2 were polite.