When adding a tag from the detail page in the OPAC, the page should update to show the newly-added tag: 1. Fill in tag, submit form. 2. Message displays "Added X tag(s)." 3. Form field clears. 4. "Tags from this library:" is appended with newly-added tags.
You have to deal with the fact that tags can have a moderation. In this case, you can't display new tags at OPAC. I think mainly to avoid the search engines indexation (google, ...) with unwanted text.
My goal is to give the user immediate feedback on what tags they have submitted. The tags would be added to the DOM during that "session" (before the user navigates away from the page) merely to give the user a reminder of what tags they just submitted. I revised the bug title to make it more specific.
I think this would be nice. Currently the 'missing' feedback when adding tags from the result list and detail page is a bit confusing.