Alan Klas developed vertical slider support for the bevy_ui_widgets module in the ickshonpe/bevy repository, enhancing the UI toolkit to support both vertical and horizontal sliders with automatic orientation detection. Using Rust and applying principles of UI development and game development, Alan implemented logic to determine slider orientation based on widget dimensions and adjusted drag and click behavior to ensure intuitive interaction for vertical sliders. The work included correcting axis calculations, handling inverted Y coordinates, and maintaining backward compatibility. Comprehensive manual tests were added to verify consistent behavior across edge cases, reflecting a thoughtful and robust approach to UI component engineering.