In testing the fix for jira SAK-32509, I found one other article with missing images: "How do I copy questions from the question pool into an assessment?"

Note that this article was not a new article, and the images do appear in the 11.x branch. It appears that the directory name may have changed in the latest content export for 11.4.

The missing images are in the following image folder in github:
https://github.com/sakaiproject/sakai-help-files-download/tree/master/Sakai11/HTML/images/How-do-I-copy-questions-from-the-question-pool-int/