Worked on improving data quality for the Safari DOM moveBefore API within the mdn/browser-compat-data repository by documenting a specific browser bug and linking it to the relevant implementation issue for traceability. Focused on enhancing the accuracy and reliability of browser compatibility data, this work involved careful API documentation and data management using JSON. By addressing a known issue in Safari’s DOM API, the update helps developers identify integration risks and supports more effective cross-browser testing. The contribution did not introduce new features but provided a targeted bug fix that strengthens the overall coverage and utility of compatibility data for web developers.