Worked on the pimcore/admin-ui-classic-bundle repository, focusing on frontend development using JavaScript. Addressed a critical bug affecting the assignment of root elements to pimcore_relation fields in the admin UI by removing an unnecessary type conversion of the root node’s ID to a string. This technical adjustment ensured that IDs were handled correctly, restoring reliable root-element relation behavior and reducing the risk of data integrity issues for editors. The work stabilized content relationships within the admin interface, minimizing potential errors and support requests. Demonstrated attention to detail and a methodical approach to problem-solving within a JavaScript-based frontend environment.