I was updating my old regular builds, some of which are years old, and I got the MOO cheat alert for a number of them. Except, I built them myself and I never use that cheat. Ever. In the entire lifes...
I had one of my builds get the MOO warning. Even though I didn't use the cheat. I did use F5, and alt placed/enlarged one or two items. Maybe that triggers it too? I know it can, in rare cases, make stuff disappear, so maybe they decided to include all placement cheats? Or maybe just anything that isn't on the normal grid/has footprints overlapping will trigger it?