When they first interested in you, they are super fast and responsive. When the interview is over, they don't even get back to you until you email them. The first interview is relevant, the second interviewer is a bit agitated when you do not agree with her.
First red flag started when they gave you for an assignment with minimal data/info, which makes it hard to complete with UX related task. The assignment took me really long time to complete, yet the provided me no feedback at the end of it.
The title of the job application was UI/UX, then changed to UI afterwards. I suspect that they do not even know what they are looking for.