The strange thing with the tags is that it is showing tags that are not in that shared notebook. It is populating my FREE account with tags I have in my PRO account from other, not-shared, notebooks.
And if I share a notebook, then want to unshare the notebook, I need to unshare each note, rather than to simply unshare the notebook itself?
I would expect if I unshared the notebook, it would remove the notebook, all notes that were shared through that notebook, and all of the tags that were brought in from that shared notebook.