During May 2025, John Reck focused on stability improvements for the utmapp/gfxstream repository, addressing a critical bug in the EGL window surface lifecycle. He implemented a fix in C++ that mitigated a Use-After-Free risk by ensuring the ANativeWindowBuffer is set to null after release, following Android NDK and API documentation. This change enhanced the reliability of graphics programming workflows by preventing potential crashes during the EGL cancellation path. John’s work demonstrated a deep understanding of native window buffer handling and contributed to a more maintainable and secure graphics streaming component, even though no new features were introduced that month.