It’s still an issue when sharing posts even though, as you noted, posts do have an og:image tag. In the example in your screenshot, the image name in the og:image tag is https://www.peachythemagazine.com/wp-content/uploads/2024/08/readers-favorites-081724.jpg. I’m wondering if it is because the image has info added before it by Shortpixel (bolded below) and therefore Facebook does not recognize it as the same image?