Your question is Troubleshooting Cross-Browser Issues. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Describe a time you had to troubleshoot a complex cross-browser compatibility issue. Explain how you isolated the cause across browsers such as Safari, Chrome, Firefox, or Edge, prioritized the work, and communicated with others involved. The interviewer is probing for methodical debugging, judgment under ambiguity, and ownership rather than a list of browser-specific facts. A strong response uses STAR, distinguishes symptoms from root cause, explains the evidence behind technical decisions, and closes with a measurable result and lesson learned.