Accessibility 360 images

Hi! I have run into a problem with keyboard accessibility on the 360 images. Using NVDA screen reader.

When the slide first loads, the hotspots and markers are able to be accessed by keyboard (good) but if I click on a hotspot or marker to show a layer, once the layer is closed, I can't tab to any of the hotspots or markers again. The arrow keys still work to move the image and I can access the button that is on top of the image.

Is there something I'm missing? 

Example module https://360.articulate.com/review/content/6cc9596b-1250-4685-8322-ba85bf2e8def/review