During July 2025, Ryosei Otaka focused on stabilizing the Windows port of WebKit in the nt1m/WebKit repository by addressing a persistent issue with window size change event handling. Using C++ and leveraging his expertise in bug fixing and software development, he corrected the selection logic for GraphicsLayerWC’s drawing area by reordering conditional compilation checks in DrawingArea.cpp. This technical adjustment ensured that window resize events were reliably dispatched, resolving rendering inconsistencies and improving the robustness of the rendering pipeline on Windows. The work demonstrated careful attention to platform-specific event handling and contributed to a more stable user experience.