I've had it happen with Giganotosaurs, Baryonyx, Suchimimus, Dilophosaurs, Compy's, Gallimimus, Struthimimus, Carnotaurus, Allosaurus, Stygimoloch, Velociraptors, Metriacanthosaurus and Herrerasaurus all escape into other enclosures or the guest areas and these are just the ones I can remember off the top of my head. I play on Series X and my theory based on when it happens during a park build is that it's tied either to amount of construction on the map or amount of animals in the park causing some sort of tracking issue within the available memory when items aren't currently within the view of the camera. I've not yet figured out which yet though.