taggable has several unused methods that can be removed:
Also remove TAGS_PER_LINE config setting
The following method is currently used to list the fandom tags on external works, but should be changed and removed:
The following methods are current used to show tags on series blurbs when the user has tag-hiding preferences enabled, but the code should be updated and the methods removed:
Ensure that you can access pages that display bookmarks of external works, e.g. search results for external works bookmarked less than 6 months ago. If they don't 500, this is fine.
Check that you can access external work pages, e.g. Below the Belt. If they don't 500, this is fine.
Set your preferences to hide warnings and additional tags, and then make sure you can reveal warnings and freeforms on series blurbs (that is, the blurb on https://test.archiveofourown.org/users/USERNAME/series -- not the work blurbs on the https://test.archiveofourown.org/series/1234 pages.)