In June 2025, Mikkel worked on the craftcms/cms repository, focusing on refining the user interface by addressing a specific bug related to the Section Settings action menu. Using JavaScript and PHP across both front end and back end, he implemented conditional rendering so that the action menu appears only for entries with a valid section ID. This change reduced UI clutter and prevented potential misconfigurations by ensuring users only see relevant options. Mikkel’s solution demonstrated careful attention to edge cases and data validation, resulting in a more consistent and maintainable interface that aligns with expected data integrity standards.