Worked on the openedx/frontend-app-discussions repository to address a critical UI issue affecting discussion posting permissions. Focused on frontend development using JavaScript, React, and Redux, the work involved correcting the useUserPostingEnabled logic to ensure the 'Add a post' button is hidden when posting is disabled. This targeted bug fix aligned the user interface with actual posting restrictions, reducing user confusion and preventing unauthorized posting attempts. Additionally, updated and expanded the test suite to cover the new behavior, improving regression safety and reliability. The changes contributed to a more intuitive user experience and reduced potential support overhead for the application.