Yannick L. focused on stabilizing layout measurement logic across the facebook/litho and facebook/react-native repositories, addressing regressions caused by unsnapped dimension exposure. By reverting prior changes and enforcing snapped-dimension-based calculations, Yannick improved UI consistency and reduced confusing edge cases in cross-platform mobile development. Working primarily in C++ and Java, Yannick removed raw unsnapped dimension access, simplified measurement paths, and aligned behavior between Litho and React Native. This work enhanced maintainability and future-proofed layout code, particularly in Android environments. Over the month, Yannick fixed two complex bugs, demonstrating depth in layout engineering, algorithm optimization, and mobile UI reliability.