Worked on the godotengine/godot repository to enhance terrain editing reliability by addressing a critical undo/redo bug in the Godot editor. Focused on C++ core engine development, the solution involved clearing terrain containers before restoration, ensuring that terrain data is rebuilt from saved properties rather than duplicated or corrupted during undo operations. This fix resolved an issue where undoing terrain set moves could lead to data duplication, improving the stability and consistency of terrain editing workflows. Demonstrated strong skills in software debugging and game development, collaborating with core maintainers to deliver a robust solution that reduces data loss risk for level designers.