In the map editor, units green Underlords do not have icons over them.
Windows 10 64 bit, 8 Gm RAM, Intel(R) Core(TM) I7-4500 CPU1.80 GHz 2.40GHz GPU: AMD Radeon R7 M265, Intel(R) HD Graphics Family. Version game 1.5.2
Just compare the 2 screenshots. The blue units have icons, not the green one.
War for the Overworld Launcher Log.txt
Did you use the mirror tool to create these two cores?