@james This is kind of an interesting problem… i.e. because unless instructed, a general user viewing sketchfab models with annotations will not know to do this… however, having the model automatically translate back to its orbit origin when an annotation dialog looses focus, could also be a bit annoying to the user experience.
I have not searched viewer API methods yet, but am curious if one should desire to have the view center reset automatically after an annotation dialog closes, are there methods available to accomplish this? e.g. settings or api.