Worked on stabilizing the admin user interface experience in the opencast-admin-interface repository, focusing on resolving a persistent issue with modal behavior in the User, Group, and Access Management sections. Addressed a bug where the Cancel button did not reliably close modals by wiring a close function through the WizardNavigationButtons component, ensuring consistent and predictable modal closure. This solution improved the overall user experience and reduced confusion during configuration flows. The work involved front end development using React, with an emphasis on component composition, modal lifecycle management, and event handling in JavaScript and TypeScript to enhance maintainability and usability.