Flying out of MAD to a third country. I am a EU citizen and hold a national ID card for my country, which I always use to enter Europe as I don't hold a valid European passport at the moment. I hold citizenship for a third country and I use that passport to fly with. The third country passport has never entered Europe, cos I use my national ID card, yet officers demanded to see it, claiming I need a passport to fly. They then proceed to scan my third country document and stamped it with an exit stamp.

What logic does this make?