Swiping over two chapters and then back should force the annotations on a page to refresh – I think that's the quickest way. Or, going to the main library and navigating back to the chapter. It's not ideal, for sure. The annotations are there, they're just not consistently re-drawn on the page after each change.
EDIT: Is it the tags dialog that stays up, freezing the app, or is it the chapter that doesn't show the tag after adding the tag? Both are valid bugs...
Samuel Bradshaw • If you desire to serve God, you are called to the work.