Seems like they're misusing 2020 widget (meant for the comparison for two photos) to imitate a slideshow. Either way, whether this is a comparison or not, it is better to use <slideshow> in IV.
- It isn't slideshow in original page so it's optional. Since they use this widget not for images comparsion, I think it's ok not to mark it as @unsupported
- Type of issue
- IV page is missing essential content
- Apr 20, 2019