i have no idea if all of these inconsistencies are causing actual issues with the map or not but i'll put this all here regardless so at least you know. (all map settings are on import for wonders, rivers, resources etc.) loading map in world builder i notice; none of the volcanoes are on mountain tiles, they require a mountain tile to be placed on. some mountain tiles have woods or jungle on them, cannot place woods or jungle on mountain tiles in world builder.

as for the natural wonders (the ones i notice are not placed on correct tiles): great barrier reef cannot be placed as is because it cannot be placed adjacent to ocean tiles. cliffs of dover require 2 grass hills or plains hills. mt.everest requires 3 mountains. eyjafjallajokull requires 2 snow or tundra, or 2 snow hills or tundra hills. lysefjord requires 3 plains or plains hills. lake retba requires 2 plains. matterhorn requires a grass mountain or plains mountain. ubsunur hollow requires 4 tundra tiles. zhangya danxia requires 3 mountains of the same kind.

again, i have no idea if this affects the map or not. but i also suspect, at least when importing resources, some of the resources may be on tiles they wouldn't be able to be placed on. no time to confirm tonight.