Public Course with Problems

As per the document :

u/s 4.11.4 “Only HTML components, Video components, and course handouts have a “public” view. Unenrolled learners will see a message requesting that they enroll to see more complex content types, such as discussion forums, problem blocks, randomized content blocks, exams, Open Response Assessment, and other XBlocks.”

But when public visitors or unenrolled users see a sub section with Problem Block, they are not able to see the message requesting to enroll. But the content remains blank. Is it desirable?

This happens of ironwood