The applicant who wouldn't give up.
A real applicant reached the final screen, pressed Submit, and got a vague error. She tried at least seven times over two days. The server had been saying exactly what was wrong — her phone number's format — and the page threw that message away. We made the page show the exact field and the fix, aligned the rules, and made the phone check more forgiving. Without her persistence, low applications would have looked like low interest.
