Unless I'm doing it wrong (units in my field of vision flash when I select an action, but this doesn't entirely make sense with what the OP says - action MENU and back to the map? How do you do that?) I am not seeing anything that I shouldn't see, unless I ordinarily see things that I shouldn't see.
No, I don't see the entire map, and I have had situations in the past where a dude was in the woods/mountain/etc and I couldn't see him until I got closer.
Maybe you guys are using the eye candy enhancer or something?
E: and no, I'm not trying to ask for cheats. I just don't understand how this is an issue. If it is, and it's just not explained thoroughly, I'd like to see it fixed.