Sara Matos focused on improving UI reliability in the mautic/mautic repository by addressing a nuanced CSS selector issue affecting the Points > Manage Group menu when group IDs contained dots. She applied JavaScript’s CSS.escape() method to ensure proper class application, resolving a bug that previously caused incorrect UI behavior. To prevent future regressions, Sara expanded acceptance testing coverage, integrating robust test cases for this edge scenario. Her work demonstrated a strong command of front end development, CSS, and acceptance testing practices. While no new features were introduced, her targeted bug fix and test enhancements contributed to more maintainable and predictable UI code.