During January 2025, Antoine Richard focused on stabilizing simulation workflows in the isaac-sim/IsaacLab repository by addressing a critical issue with environment index resolution in the Articulation class. Using Python and leveraging his skills in debugging and robotics simulation, he implemented a fix to ensure environment indices were correctly created and passed to simulation functions, such as write_root_com_pose_to_sim. He also enhanced the test suite to robustly handle environment ID selection during simulation updates, improving early error detection and overall test reliability. This work reduced indexing-related errors and contributed to more reliable data integrity within IsaacLab’s simulation environment.