Real interview questions

A recruiter reached out to me about this position. The first step is to do a take home assessment. I spent about 8 hours working on this assessment only to be rejected without any constructive feedback. The assessment is to create a react app to access github's api and create some pages then submit the project. They ask for code organization, unit tests, and mobile responsiveness, multiple pages, unit tests, and a write up explaining the solution. After doing the assignment, fulfilling all the criteria, and submitting it on time, I didn't hear anything back. I followed up with the recruiter a week later. I then was informed that they rejected my application with some very non-specific feedback. I pressed for more details but only got more non-specific feedback. Based on some other reviews, it seems my experience is not unique so I would recommend steering clear to avoid wasting time and effort.