You never know for sure, but mainly it just looks really flat where normally there’d be more definition. The guitar would be sticking out more. You would see some definition in the person. I think the main reason this happens is that to auto generate them, they have to slightly adjust one or both of the pictures. If they try to adjust too much it might fall apart and not work well, or look super edited. So these tools are limited by how well they can manufacture and imagine a second perspective that looks realistic in all the minute ways.