Worked on the mdn/browser-compat-data repository to enhance the accuracy of browser compatibility information by addressing a critical data issue related to Edge Legacy’s HTTP Origin header support. Focused on aligning Edge Legacy’s partial support representation with Firefox, the work involved updating JSON-based data models and refining UI annotations to ensure developers receive consistent and reliable compatibility data. Applied skills in browser compatibility and data management to correct attribution errors, which helps reduce confusion for downstream tooling and documentation. This targeted bug fix improved the reliability of cross-browser data, supporting both the developer community and broader documentation efforts.