It runs in Wine (wine-6.20 (Staging)) but I keep getting an empty view in the main window. No idea if I am doing something wrong or if it's a Linux issue.
My approach was to load the globe.rul in Openxcom/standard/xcom1.
It does save fine as I got a new file out of it. But maybe you want to save it similar to the vanilla globe.rul. Creating new vertexes and importing background works too. So not sure if it might be an import thing. Loading from a rul file I have created with this tool works fine.
Also it would be nice to save project data (chosen background, etc.)
vanilla
polylines:
...
- [351.25, -41.625, 353.875, -41.625, 352.375, -37]
vs
Globe editor
polylines:
...
- - 351.25
- -41.625
- 353.875
- -41.625
- 352.375
- -37