Something funny happened a few hours ago on my evening lecture on PCB Design. One of my students showed me in the Q&A part his project where he used a CR2032 Battery holder, which was giving him a DRC Error (Can not find segment (x1,y1-x2,y2) Courtyard not closed shape). I thought, he made an error when designing it himself but he assured me that he had taken it from the standard library.
I confirmed it by testing it myself under 5.1.9 (and it isn’t corrected under 5.99)
Long story short:, here is the culprit with the corresponding message:
A bit more testing gives a similar error for all these 6 footprints: