Hidden Army???

Idk if this has happen to others but after awhile of Highlighting (pc) right clicking when selecting amount of groups... later down the line they start to not sure number counts... my army is hidden to have me not even notice if I even have an army there... I have to zoom out to see a little black stick figure to notify me theres something there... Same with the enemy... sometimes their troops is hidden as you can see in battle can even tell theres a fight going on.

any way to like refresh the map to make things go back to normal...? its a pain to fight like this.