Worked on enhancing the user interface of the GTNewHorizons/ServerUtilities repository by implementing a vanilla tooltip rendering approach for sidebar buttons. Addressed Z-height rendering issues to ensure tooltips display correctly and are not obscured by other UI elements, which improved the overall user experience and reduced navigation friction. Refactored tooltip logic and updated project dependencies, focusing on maintainability and stability. Utilized Java for GUI development and Gradle for build scripting and dependency management. The work resulted in a more consistent and responsive sidebar interaction, simplifying future maintenance and contributing to a smoother, more reliable interface for end users.