Worked on the tukui-org/ElvUI repository to address a reliability issue with the staggered update timer in a Lua-based World of Warcraft addon. Focused on improving the timer’s callback mechanism by ensuring the correct context was passed to the delay function, which resolved intermittent UI refresh glitches and stabilized update timing. Applied targeted changes and regression testing to guard timer logic, reducing the risk of future issues and supporting smoother user experiences. Utilized Lua programming, asynchronous callback handling, and Git for version control, demonstrating a methodical approach to bug fixing and laying groundwork for future enhancements in game UI development.