So, in my Super Civs VI mod, I have a number of Unique Buildings for civs that don't replace anything, and reside in the City Center. When using this mod, those buildings appear in the city production list when playing as any civ, not just the one that the buildings belong to.

I don't think there's anything I can do to fix this on my end, so hopefully this can be addressed pretty easily. FYI, I have values for the buildings' TraitType values, but of course not an entry in BuildingReplaces, and this doesn't happen in the regular game, for whatever reason. I've looked through the code somewhat, but I can't see where you've changed any code in the relevant functions from the base game files, so I've no idea how to fix it.