I am not completely sure about it, but I feel like the preview of the attack range of the enemy units might be slightly bugged.
I am 70% sure that it showed a certain area as "not targeted" and I got, immediately after, targeted in the same area.
During the next round preview, however, it was properly shown as targeted,
I have the feeling the reason might be found in the levelling up of the enemy units.
Does it happen after my path is done?
Maybe I was not shown that the enemy mage had a bigger range due to its evolution not having happened yet on the map?
If I am not imagining things, I feel like I should suggest making the evolution happen before my "shopping phase", so that I could plan accordingly my path.
Still, have a nice day and a great Sunday!