During July 2025, Tiago Fortes focused on stability improvements for the KhronosGroup/Vulkan-ValidationLayers repository, addressing a critical issue in color attachment handling. He implemented robust boundary checks to guard against out-of-bounds access when working with color blend attachments, directly preventing potential crashes and undefined behavior in the Vulkan validation flow. This work required deep debugging expertise and a strong understanding of error handling within graphics APIs, leveraging C++ to enhance the reliability of the validation layers. Although the contribution centered on a single bug fix, the solution demonstrated careful attention to defensive programming and improved the overall stability of the codebase.