The first time I add a folder the Tags are imported and assigned correctly, in fact I can see the same tags that windows explorer detailed properties shows in the "Tag" container.
If I remove a tag with another app (Lightroom, in this case) the windows "tags" container is updated but Digikam tag manager is not. Even if I launch the menu command "Album\Re-read all metadata from files" or if I click on the "More\Read metadata from file into the db", beneath the tag manager window, after selecting the image(s) to be synced. And I also clicked on the "syncyng" icon present on the status bar.
Thanks.