H5P Not Displaying Properly After Updating

We have a situation where the H5P content type library (specifically, the question set) for a book was updated after some H5P (same content type) were created, and now the H5P in the book are not displaying properly. Some are not showing at all, even though the embed code is there.
Is this a bug? Any thoughts?

Sorry you’ve encountered this – we’ve recently received reports of this issue and the tech team is investigating a systematic fix. The bug appears to be associated with the H5P Question Set library version 1.20.31. A newer version (1.21.13) is available, and updating existing Question Set activities in a book to this latest version appears to resolve the issue. The steps in this guide could be worth trying: Add Gradable Activities to Your Book – Pressbooks User Guide , specifically the later steps in H5P Content > Libraries for upgrading existing Question Set activities in the book.

Alternatively, opening one of the affected Question Set activities from H5P Content > All H5P Content, selecting Edit, and then clicking Update should also restore the activity.