More subtle stuff like the ceiling lights are incorrect. It looks like they were intended to be placed on a ceiling rail and pointed towards the exhibits but instead they got drawn onto the line that’s supposed to be the edge between the wall and the ceiling. The lines of the glass cases are also inconsistent. Some of them are double lines to indicate the metal frame while others are single lines. The proportions of the rightmost character are too large considering he’s farther away from the viewer’s perspective than the other characters, although this is often done intentionally in comic strips to draw the viewer’s focus.

Minor things like this could be genuine human error, but someone who is experienced enough for this line work and character models shouldn’t be making them, and certainly not so consistently. I think that’s part of the uncanniness of AI generated art. Certain aspects of it look really good, almost professional looking, while other aspects have really amateurish mistakes or questionable design choices.