During June 2025, Botond worked on the mozilla/gecko-dev repository, focusing on improving the correctness and stability of the browser’s rendering pipeline. He addressed a complex bug in coordinate conversion within ViewportUtils, specifically refining how CSS transforms and nested content are handled. Using C++ and leveraging his expertise in browser development and layout engines, Botond simplified the traversal logic to the root prescontext frame, ensuring accurate coordinate space conversions in scenarios with deeply nested frames. His work enhanced the robustness of CSS transform handling, and he improved documentation to support future maintenance and traceability of the fix within the codebase.