Accessibility: Headings in Storyline 360

Upon further testing, I discovered that creating and publishing a brand new project works as expected with screen reader testing. Headings are read out.

I created a sample page with an H1 and an H2, each with supporting text. All headings, including the Course Title (top bar region H1) slide titles and sub-titles (main landmark H1 and H2) are announced and the headings are listed in the Elements List window.

Here's a video of my experience testing this new project.

This is interesting, as it demonstrates that creating a brand new project using the latest Storyline update generates the proper semantic structure (at least with headings), but republishing a course built with any previous Storyline versions (marked up with headings) does not seem to have the same result.

Articulate staff- would love some feedback as to why this might be happening. 

Thank you!