I've created KML files of some world regions for display using the Google Maps API. This has been working fine, but one region has recently started displaying as if the data's corrupt. You can see what I mean here:
If I load the same KML in Google My Maps it still displays correctly:
It used to display fine, but now even if I roll back to previous versions of the file it displays in this weird way.
The KML regions are created using QGIS's Vector > Geoprocessing Tools > Dissolve tool to merge countries (to shp files), which I then save off as KML. Data is from Natural Earth's ne_50m_admin_0_countries data set.
Does anyone know what might be going wrong?