This isn't the first report of that. It was created in Game Maker Studio 1.8, I am not sure what particular set of data is getting flagged, but apparently it is common for games made in GMS 1.8.
A member registered Jul 17, 2016 · View creator page →
4 Player Beat Em Up Demo
A Thornwatch Combat and Environment Demonstration
4 Player Splitscreen Coop Dungeon Crawler Rogue-lite Action
Single Player Short Story Action Adventure