After about 2 months, I have finally figured out that the reason why VanasKoS breaks Cartographer_Routes on map line drawing.
I fixed the issue on the VanasKoS end. Changelog as follows:
xinhuan * r57849 VanasKoS/:
VanasKoS: - Add missing external folder GraphTextures of GraphLib so that this stupid addon doesn't break every other addon that uses GraphLib if it is installed with libraries embedded (i.e. with externals) and its GraphLib version conveniently happens to be newer.