Worked on stabilizing core UI components in the Telefonica/mistica-ios repository, focusing on resolving race conditions affecting Button and BottomSheet interactions under Xcode 26 Beta 1. Addressed these concurrency issues by implementing MainActor-scoped updates using Task blocks, ensuring that UI changes execute safely on the main thread. This approach improved the reliability and responsiveness of critical user interface elements, directly supporting product quality and user experience goals. Demonstrated expertise in Swift, SwiftUI, and concurrency by adapting to the evolving beta toolchain and maintaining forward compatibility. The work resulted in a targeted bug fix that enhanced UI stability without introducing new features.