Worked on the OpenRailAssociation/osrd repository to address a critical issue affecting simulation output integrity. Focused on front end development using React and TypeScript, the developer delivered a targeted bug fix that preserved user-edited values for mass and length within simulation results. This solution ensured that both the results table and report sheet consistently reflected these edits, preventing regressions where changes could be lost or overwritten. By improving data reliability and traceability, the work reduced the need for post-processing corrections and supported more accurate analytics. The signed-off commit enhanced auditability, contributing to more dependable simulation workflows for stakeholders.