Cavendish Qi focused on improving the reliability of multilingual input in the google/mozc repository by addressing a subtle but impactful bug in IBus preedit handling. Working primarily in C++ and leveraging expertise in Input Method Editor development, Cavendish engineered a solution that ensures the preedit string is properly cleared when no preedit text is present, preventing deleted characters from reappearing during language switches. This targeted fix enhanced the user experience by reducing visual glitches in the preedit area across Linux environments. The work demonstrated careful attention to user interface stability, though it did not involve new feature development during the period.