During October 2025, Nuno Pereira focused on improving fullscreen behavior for Wayland users in the libretro/RetroArch repository. He addressed a persistent issue where the compositor could not reliably select the correct monitor for fullscreen mode when using libdecor. By delivering a targeted patch in C that conditionally removed splash screen initialization under HAVE_LIBDECOR_H, Nuno enabled proper monitor selection and a smoother user experience. His work demonstrated a strong grasp of graphics programming, system-level development, and conditional compilation. Although the contribution was a single bug fix, it addressed a nuanced integration challenge and reduced user-reported issues related to fullscreen glitches.