Ingenuity's shadow is too sharp and the blades appear to us as if they were still or as if the photo had been taken with an exposure time too short compared to the possibilities of the camera that made it.
What is actually behind this photo?
Related Links:
Black and White Image From Ingenuity's Third Flight https://mars.nasa.gov/resources/25852/black-and-white-image-from-ingenuitys-third-flight/
PIA24623: Black and White Image From Ingenuity's Third Flight https://photojournal.jpl.nasa.gov/catalog/PIA24623
Mars Helicopter Technology Demonstrator https://www.researchgate.net/publication/322311208_Mars_Helicopter_Technology_Demonstrator