Your question is Owning a High-Severity QA Escape. 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).
Tell me about a time a serious defect escaped your test process close to release or in production. How did you handle the bug triage, communicate with stakeholders, and change your QA approach afterward to prevent it from happening again?