Worked on the robertpenner/fluentui repository to enhance the stability of keyboard accessibility features by addressing a bug in the KeytipTree component. Focused on refactoring the updateNode function to correctly handle parent re-parenting, ensuring that when a node’s parent changes, the old parent removes the child and the new parent adds it. This adjustment preserved the integrity of the keytip tree and reduced navigation failures in edge cases. The work was implemented using TypeScript and front-end development practices, emphasizing maintainability and clarity in component structure. The contribution was delivered as a targeted fix, reflecting careful attention to component refactoring.