Mostly because the engine is 25 yrs old, so it might trigger false alarm from some anti-virus programs
It's still happening with v1.6 and v1.7 too—opening the Windows History, Cookies, Globalization, User Desktop, Pictures, Documents, Downloads, System Resources, x86 Program Files (not the non-x86 one??)… even the damn System 32 gets hit.
Old engine or not, I'm gonna pass. Sorry.
It's totally fine to pass if you don't feel safe to run the gameHopefully in the future we'll be able to find a solution to this problem