Phil Senior Front End Developer interview questions

Interviewed with an Engineering Manager, 2nd interview with Co-Founder. Got to round 3 with another engineering manager, saw figma icon on my desktop and begin questioning if I was a UX designer. I’ve been programming 13 years with a resume full of job experience to prove it yet he kept stressing to me that I’m a UX designer because I stated I loved UI. Did a last minute code challenge, write vanilla JavaScript to loop through a table. Completed the exercise, even showed other work from current employer. Interviewer said I did well. Followed up with a thank you email and 2 hours later was informed they were moving on to other candidates. Followed the email asking what could I had did better and received no response.