Worked on the ant-design/ant-design repository to address a nuanced issue with tooltip configuration boundaries in React-based front end development. Focused on isolating global ConfigProvider tooltip settings from internal Tooltip components used by Popover and Popconfirm, the solution improved UI consistency and prevented unintended cross-component configuration leaks. The approach maintained API compatibility by confining changes to internal Tooltip configuration handling, ensuring that global settings no longer affected internal tooltips. This JavaScript and TypeScript work enhanced UI stability and reduced the risk of user experience regressions, contributing to a more predictable and maintainable codebase without introducing new features or altering APIs.