Navigation between routes in my React app is misbehaving: page links either do nothing or land on blank screens, and several function components fail to mount after a route change. The codebase uses React JS with React Router—BrowserRouter, Routes, and useNavigate are all in play—so the fault likely sits in that configuration or a related state-handling edge case. Here’s what I need from you: • Trace and resolve the routing bug so every declared path loads the correct component without a full-page refresh. • Ensure all affected function components render reliably on navigation (no unmounted or stale state). • Identify any other front-end issues uncovered while debugging and patch them if they directly contribute to the routing problem. Acceptance is simple: clicking through the existing menu must transition smoothly to each page, components should appear instantly without console errors, and the final pull request should include a concise summary of what went wrong and how you fixed it. React DevTools, the React Router docs, or any preferred debugging utilities are all fair game as long as the solution is clean and maintainable.