I do wonder if this is actually a bug on not. I have been searching out and have found over 150 Procedural Supergiant stars and the Supergiant variants all seem to show as one class higher than the normal variant.
Red stars are normally M, and Red Supergiants show as K in GalMap
Yellow White are normally G, and Yellow White Supergiants show as F in GalMap
Blue White stars are normally A, and Blue White Supergiants show as B in GalMap
In the case above, GalMap shows it as a Blue Supergiant, yet in the logs, it will show as a Blue-White super giant. This is consistent with what I have seen across all supergiants for a long time now.