“Mirrored” textures 747-8 and 787-10

Can anyone please explain how it is possible for the WORLD TRAVEL Livery on the Boeing 747 to render properly (not reversed on one side)??
Why do WE get a fake livery that renders properly but can’t get a real airline livery to render properly?

Am I missing something here? It’s obviously possible for these liveries to render properly - why can’t Asobo / Microsoft / whoever provide a template that can be used just like the WORLD TRAVEL one?

Same goes for ANY other duplicated and reversed textures on other aircraft.
What is the problem? How difficult can this be?