I did a screening call with the recruiter who was really not friendly (quite rare in this industry), then the CTO who was okay, but seemed very stressed by his day.

They both asked me to code a take-home exercise. I asked them both if it was okay to do it in TypeScript, and they said yes.

The take-home exercise prompt made no sense, asking to build it with Python but testing it with JUnit (Java) or RSpec (Ruby).

I sent them several emails to ask about that. I never got a reply. I did the coding in TypeScript and got no reply. I sent follow-up emails, and they finally told me I was rejected because they needed it in Python or Java.

Total jokers, ghosting candidates during the interview process, which was a first for me.

Make a Tetris game in the language of my choice. Or only in Python, but with Java or Ruby testing frameworks. Actually, it was in Java or Python, too bad.