For of War setting isn’t saved when game is closed and reopened, it defaults to “On” every time. It looks like when changing this setting the file “C:\Users<user>\Saved Games\Warcraft2Remastered\Warcraft2.ini” gets updated, however there isn’t an entry for Fog of War. So when the game loads it doesn’t read the Fog of War setting from this file.
In warcraft 2 remaster I noticed that the setting doesn’t work quite right.
If you reveal some fog and turn it off, the fog stays but new fog won’t form as you explore.
You can just reexplore the area to remove it.
May not be the same problem, but worth mentioning.
Technically a separate problem, but yeah I’ve noticed the same as well. The way I remember in the original it would just remove the fog completely with no need to re-explore fogged-up areas.
This doesn’t matter if you change the setting from the main menu or in game either. Annoying.