Yes. This issue is specific to the Ananke theme, and should be raised here:
https://github.com/theNewDynamic/gohugo-theme-ananke/issues
The problem is here:
https://github.com/theNewDynamic/gohugo-theme-ananke/blob/master/layouts/_default/summary-with-image.html#L7
To reproduce the problem:
git clone --single-branch -b hugo-forum-topic-38963 https://github.com/jmooring/hugo-testing hugo-forum-topic-38963
cd hugo-forum-topic-38963
hugo server
Then visit http://localhost:1313/foo/