During January 2025, Lucky Tan focused on stabilizing the user interface for the KyberNetwork/kyberswap-interface repository by addressing a persistent crash related to portal container removal. Using React with JavaScript and TypeScript, Lucky implemented a Portal Removal Crash Guard that checks for the presence of the portal container in the DOM before attempting removal. This defensive approach to DOM lifecycle management prevented removeChild errors and reduced portal-related crash reports. The solution improved the reliability of modal and portal flows, resulting in a smoother user experience. Lucky’s work demonstrated careful attention to regression safety and robust front end development practices.