[Plugin: WordPress SEO by Yoast] sitemap has wrong image count

When I am looking at the xml sitemap I am not able to see the correct number of images on a post. If there is a featured image that one is not counted. I would love to have a single page to go to and see what has images or not and now pages with just a featured image display as having no images.

https://www.ads-software.com/extend/plugins/wordpress-seo/