I just realized that the problem exists on PAGES, not posts. I have tried this on a clean install with 2017 theme and it works the same as this video.
http://recordit.co/7voA2BhAI2
I use featured images for pages on some websites to display the child pages on a parent page.
Any thoughts?
WP-Ecommerce shopping cart was my problem also. I noticed there was an upgrade available. So, I did the automatic upgrade, checked out the widgets and they worked.
