Not to the interview just yet, they required the applicant to submit a coding challenge before continuing. Though I have nothing against the coding challenge, it was quite fun, the flow and the process specifically in that, was okay. However, if they decided to put a coding challenge upfront before the rest of the process, I think the applicant should at least hear something back that's not an automated response. If they really think that the applicant's background looks interesting, why not have a chat and then get to know each other? By pointing out that there'll be no specific result or you can't enquire about the selection process, that really speaks a lot.

A small(ish) assignment to implement a login screen. I'm pretty confident that I implemented it correctly based on the requirements, and some days later I got an automated message saying the challenge "did not meet the minimum score required". I'm pretty sure I got rejected for some other reason. One more company that doesn't value the interviewee time, unfortunately.