Question about visibility changing...

[Warhero]

I have noticed next thing many times. I launch battle generator, choose sides/year and visibility and set it (lets say 60) and check "default" map. If that map seems not to be good enough for my eyes, I use map generator and press re-create to get better map. Then I notice that map has (lets say 30) different visibility than in the beginning... So I must change visibility back to 60. I wonder is this bug? Any way to fix it (Don? Andy?)
Am I only one here who has seen this change?

PS. Thanks about great patch

Warhero