This one's not as bad but still amusing: I applied to a well-known telecom company that rhymes with "May Pee and Pee" and got to the final onsite interview, after which they ghosted me. Afterwards, I did the whole round of interviews at a different company, got hired, moved my family across the country, and got established in that new job. A few months later, I got an E-mail from the telecom company saying "We would like to interview you one last time. Please let us know when you are free." LOL
Gov of Canada, famously, has some of the most braindead slow hiring practices in the country. Their HR teams are incredibly bad at their jobs. It's genuinely astounding. Last I checked the time from application to starting your job could be anywhere from 9 to 18 months. Everyone, including the employees, know it, so everyone gets "Bridged In" through an internship or hires internally. The rules are totally different with internal postings and you can get hired in a week if you're a good candidate.