This is extremely harsh especially because you weren’t even asked a question directly in relation to this and seems to me like you indirectly prove your commitment in your answersJust got feedback post AC, and I was rejected because my interviewers were "uncertain about my commitment to the UK" (international candidate, recent graduate from RG London, some work experience in my home country). I am not sure how my interviewers assumed that given: I was not asked anything about my commitment to the UK, and I did make a case about training in the UK (spoke about how I chose to study law in the UK in the first place, cited diversity and opportunities to deal with international law) while answering "why our firm". I was told I was a "fantastic" candidate otherwise, with a unique background and fresh perspectives. Not only am I unsure how to deal with this going forward, but this remark has left a sour taste - it feels like a cop-out, biased way to reject international candidates.
Really scared now as an international student myself! You are clearly a great candidate and I’m sure you’ll get an offer elsewhere