Result: the content is fetched, but is not visible.
On inspecting the page, I see that the container list has the class ed-collection-container. If I remove that class in the debugger, content shows up fine.
I cannot find where that is defined and what the issue is.
Great that you found a solution. Unfortunately, I do not know what was the issue there. When you have that one again, please post the Website ID, as well as screens and location again and let me take a look. Maybe I find a usability issue here