Hello @stranger401, we are aware of these locations around the world. However, this problem should be addressed to Open Street Map, since we use their maps and have no control over them. Once the map is corrected on OSM, it takes some time for the changes to be reflected in the application as well.
Base map layers are generally pre-generated by a tile server, thus I don't think their own measure units may be changed. Measure units settings made via Windy UI are rather related to data map overlays, not to base map layers.
I suggest that you set your device offline (turn off WiFi and cellular internet connection). If you have really downloaded the area you required, it will appear on your screen but not other regions (zoom in to details to be sure this map is really saved on your device). If no map is shown when opening the app and zooming in, you have not saved it.
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