Slitherine

I noticed that you can see the enemy zone of control advancing into the fog of war even into neutral territory, i suppose the enemy can see my advances too. This makes no sense, i can understand when the enemy advances into ones own territory since you have ´´ invisible ´´ rearguard units deployed to protect the supply lines, but why would one see the advances the enemy makes into neutral zones of control when you have no sight over the area? It kind of ruins part of the role of the fog of war itself.