Look at the hair in the background, and also the arm where the black arm socks just begin and end suddenly as they go behind and infront of the body again ( or the bad anatomy of them altogether ). The hair on the right especially makes no sense it doesn't look like a human mistake same goes with the other mistakes too they look like mistakes an ai would make because it doesn't actually understand what's going on. Lots of sudden ghost hair going on too in their work.
A lot of people on Twitter have been pointing similar things out in other work from the same artist in recent work.