During May 2025, Yuufen focused on enhancing video playback stability in the galacean/effects-runtime repository. Addressing a persistent bug, Yuufen refined the handling of video end behaviors to ensure seamless looping when set to 'restart' and to prevent flicker or unexpected results when configured as 'destroy' or 'freeze'. This work involved careful debugging and component development using TypeScript, with attention to edge cases that previously caused playback inconsistencies. By linking the fix to a specific commit, Yuufen maintained clear traceability in the project’s history. The result was a more robust video playback experience, reducing user-facing glitches during continuous use.