Greasy Fork is available in English.
Adds shortcuts for last chapter and a floaty review box, and bookmark sorting by kudos and filtering by complete only. This script is maintained by Fangirlishness with permission from saxamaphone.
< Feedback on AO3 Review + Last Chapter Shortcut + Kudos-sortable Bookmarks
No, this is the first time I hear about this bug. Can you describe it in more detail, please?
Did you solve the bug where the extension add stories you haven't read in your history?