Worked on the tukui-org/ElvUI repository, focusing on improving the reliability of action bar hotkeys for World of Warcraft players. Addressed a critical bug by expanding hotkey click registration logic to support the Wrath of the Lich King expansion, resolving broken hotkey functionality in the Titan Reforged action bar. Utilized Lua programming and game development expertise to enhance input handling, ensuring cross-version compatibility and reducing edge-case failures. The solution improved user experience by minimizing hotkey-related support requests and stabilizing action bar behavior across expansions. All changes were delivered through a targeted bug fix, emphasizing maintainability and robust input processing.