Worked on accessibility-focused UX improvements in the AvaloniaUI/Avalonia repository, specifically enhancing keyboard navigation reliability within the UI framework. Addressed a bug in focus traversal by updating the FocusManager logic in C# to ensure non-focusable elements, such as TextBlocks and empty containers, are skipped during navigation. Introduced a default behavior where CanHaveFocusableChildren returns false, preventing unintended focus stops. Developed and expanded unit tests to verify correct focus skipping and to safeguard against regressions in future updates. This work improved the predictability and consistency of keyboard navigation, contributing to a more accessible and robust user experience within Avalonia-based applications.