The Safety Plan QA cycle follows a productive pattern seen earlier with Thought Record: (1) GPT-5.2 reports buttons appear non-functional in Firefox ESR/sandbox, (2) Sonnet 5 tests on live site — all three work correctly, (3) Diagnosis: sandbox suppresses native browser dialogs (window.print/confirm), (4) UX improvement discovered despite false alarm: save-confirmation text used muted/italic style that could read as "nothing happened" even when it worked, (5) Sonnet 5 deploys bold checkmark/teal-pill style fix across all 8 languages on both Safety Plan and Worry Time. This pattern — false alarm, environment-specific behavior, genuine UX discovery — has now repeated twice (Thought Record → Safety Plan). The value of cross-environment QA is proving itself: even when the original bug report is wrong, the investigation consistently surfaces real improvements that benefit all users.