Meta Senior Software Engineer interview questions

I am working on Sev2 where the issue is this in frontend, I checked there has been multiple instances of this and some tasks are also there. can somebody shed some light past debugs on thi

Screening Interview: 15-ish minutes of behavioral (tell me about a time when...), 40 minute coding exercise. Parenthesis balancing IIRC, not too hard. Full Interview: 1 behavioral, 1 system design, 2 coding. Coding were Leetcode-like, but with some interesting twists that threw me off - I probably had not practiced enough.