It's the most bizarro thing I've ever seen, a single line text field.
Feeling kinda leet at the time I decided to take the plunge and cut and paste cover letter, CV, LinkedIn profile etc into this small field and let it burn.
Unsurprisingly I never got contact or received any confirmation or anything....
Why the hell would they even have that as an option?
(I am the %8 !!)
Example: https://www.thoughtworks.com/en-au/careers/jobs/4526889
Scroll down to 'Apply for this job' and click to activate JavaScript expanding form....bleaugh