Small bug: I re-read a book from 2021. Now 2021 shows 312/313 books read. (The giant yellow number is because I left FRAPS running.)
Additionally, re-adding a book to an older goal (to update genres) while re-reading makes a new entry - in this case, 23%. It can't be deleted normally as it's the 'newest' entry. See book 2050 in the json database.
EDIT: The 312/313
didn't resolve if I json-edit to remove the phantom 23% entry and change the status back to 'Read.'