Yes, it works fine if you use the share buttons on the post or if you copy and paste the URL directly into Facebook. But I am automatically sharing using Jetpack, and that is when it uses the header image. I bought the theme in October, and every post since then has had the issue. That’s five posts (plus the several test posts I created and deleted today as I was trying to figure it out).
Something of note: I share my posts to Twitter automatically as well, but the feature image is what gets shared on those. Only Facebook has a problem.
Here is the latest example: latest blog post
Thanks,
Evelyn