Please see this video at that timestamp: https://youtu.be/ZYEsHHohgqo?t=252 Tom confirmed (https://community.codecov.com/t/view-source-with-flags/4182) that this functionality was removed in the new UI. Please add it back – we used it to differentiate between lines covered by unit and integration tests. Without that UI, flags are useless for us, and codecov as a whole is much less useful.