Worked on SAP/ui5-webcomponents-react, focusing on improving the VariantManagement component by addressing a bug related to Save button visibility. The solution involved refining the logic so that the Save button appears only when there are unsaved changes and the selected variant is not read-only, aligning the user interface with business requirements and reducing the risk of accidental data overwrites. The implementation included a guard to ensure selectedVariant exists before accessing its properties, preventing potential runtime errors. This work utilized React for component development and leveraged both JavaScript and TypeScript, resulting in enhanced data integrity and a more consistent user experience.