Custom Map Not Displaying Correctly

[0xMatts]

After importing a GEOJSON custom map file into GitHub and exporting a TOTOJSON file into Power BI, the map does not display correctly as the entire map is considered one region, and only a different region is bolded (all though the others are grayed out).

The GEOJSON file in GitHub looks perfect, so I did not expect any issues after that point. Is there something else that could be driving this?