If you run the game at a resolution different from the desktop resolution, this saved resolution is lost if you quit the game from the Windows taskbar or the Linux/macOS dock. In all cases, I was using SDL2. It seems that the game is saving the current resolution when exiting, which overwrites the desired game resolution with whatever the desktop resolution of the primary display happens to be.

Currently if a unit is spotted by a third party but not in direct line of sight of a shooter, the shooter will still shoot. This should not happen.