This bus was an abandoned project as a result of a short-lived collaboration between the UKDT and a content developer who has since left the community. Due to the number of repaints already created and the lack of available UK vehicles, the worst of the issues with it were hastily fixed and the bus re-released under the UKDT brand - the UKDT agreement being that content created expressly for the UKDT is property of the UKDT rather than its creator.
As a result of its initial conversion from a low-quality MM2 model, followed by its hasty re-release, flaws like this are bound to be present. Really, it doesn't deserve a place beside the C400R in the UKDT stable, but it was felt that it would be a waste not to re-release it at all.