Worked on the FreeCAD/FreeCAD repository to enhance editing session stability and improve assembly handling within the application. Addressed a bug in the edit session view provider by modifying the C++ codebase to prevent unintended restoration of previous edit states, ensuring that the current editing context remains consistent and reliable. Additionally, contributed an enhancement that allows multiple assembly deactivations, streamlining modeling workflows for users. Focused on software development best practices, the work emphasized targeted bug resolution rather than feature expansion, demonstrating a methodical approach to code maintenance and stability improvements using C++ and established software engineering techniques.