Margherita Col contributed to the EvolEcolGroup/tidypopgen repository by developing a targeted test to ensure robust handling of missing data in the autoplot function, specifically addressing NA values in the MAF column. Using R and leveraging her skills in data analysis and testing, she implemented a test case that guards against failures when genotype or allele information is absent. This work improved the reliability and data integrity of autoplot workflows by documenting edge-case behavior and integrating the test into the repository for future regression testing. Her focused contribution addressed a nuanced bug, enhancing the project’s overall stability and maintainability.