Some weeks ago I noticed that when you removed a note with a tag, if that note was the last one tied to that tag, the tag was dropped from too.
And when you would like to add that tag to another note, if you clicked on "add tag" the dropdown lisy will show you the last existing tag that are already used, and not the "removed tags".
In fact, the "lonely tags" are still in the database ...
you can have a look at it with
curl -XGET http://127.0.0.1:44184/tags
So I'm asking myself, why the dropdown does not list those "lonely tags" ?