No. It was a station not connected to any line. I drew a new line from that station to a triangle station on my main line. The train left that station with two non-triangles and no triangles. I put a new train at that station and it left empty. I removed that line and attached the station as the last station on my main line (which had a triangle station on it 2 stations away) and put a new train in the station. It also left empty as time ran out.

From your response sounds like it was just a one time glitch, as I’ve played the Daily Challenge every day for over 6 months, (yes I’m addicted) and never have run into that before.