I can tell you something more.
It's never shown in articles anywhere you put it. If you put it in the intro of the article, it's shown until you stay in the category blog menu item.
It is shown if you make it in a custom module (for example in sidebar-2 position) in a category blog layout.
If you click on the article within that category blog menu item, once the article is open, the map is not shown anymore neither in the article nor in the module.
It's a fresh installation, I didn't mess with anything, I guess if you try you'll see the same issue.