While building the flashcard-style exam feature, we encountered multiple issues that required careful debugging. Another challenge was structuring the Question Bank to match the dynamic URL parameters—without the right format, the app returned no questions even when they existed. Additionally, the feedback and heart system required state handling and timeout management to ensure smooth transitions and accurate scoring. We also faced UX issues, such as making sure buttons were disabled during feedback to avoid double submissions. Finally, ensuring the Exam Page behaved correctly upon completion or failure added complexity, especially when allowing users to retry or navigate back.