The UPDATE library button doesn't work.
The [Update] button is active, when clicked, nothing happens. The window remains open, the button remains active.
I made a loom of the issue:
Thanks for filing a ticket! This seems like a bug and not a feature request, so you should definitely file this on the Community Support Forum. https://community.adobe.com/t5/adobe-xd/bd-p/xd?page=1&sort=latest_replies&filter=all