There are some issues with the Linux/OpenGL build of this game.
I'm getting "This GfxDevice does not support asynchronous readback" in the console on AMD integrated graphics (open source Linux driver) and I think it's affecting some game features:
- Packages fall through the Earth, maybe it can't read height for collision?
- They also aren't counted as dropped and I can drop as many as I want
- Countries aren't highlighted
- Colour banding in the atmosphere
This doesn't happen with the Windows build under Wine, so I think it's to do with OpenGL. This seems relevant from my Googling: https://github.com/kidapu/AsyncGPUReadbackPlugin