Storyline published only first slide of three question quiz to Review 360

As a test, I created a Storyline 360 project with three graded questions and a quiz results slide. I published it to Review 360. When I viewed it on Review, only the first question was there.

As an experiment, I added a simple regular slide as Slide 1 of my test project. When I published it to Review, now I could see that regular slide as Slide 1, followed by that first question, and nothing else. The other two questions, and the quiz results slide, are not getting published/uploaded to Review.

A simple publish to Web does show all slides in the project.