During February 2026, Windis focused on backend development for the GregTech-Odyssey/GTOCore repository, addressing a core UI synchronization issue in Java. Windis identified and resolved a bug in the AmountSetWidget that caused desynchronization during slot transitions, particularly when the input was empty. By implementing logic to reset the amount on slot switches, Windis ensured reliable server-to-client synchronization and improved data integrity for slot-based interactions. This targeted bug fix enhanced both reliability and user experience within the application. The work demonstrated strong debugging skills, effective use of version control, and a deep understanding of backend systems and UI synchronization challenges.