When sites re-publish new versions of old chapters, Poketo shows inaccurate "new chapter" notifications.
For some sites (eg. Mangadex), older chapters are updated with new translations or better scans.
These have a new "published at" date, which Poketo uses to track reading progress. Old chapters show up as new chapters, and are marked as unread in the list. It's a weird experience, to see a notification that there's a new chapter only to find it's a re-release of an old one.
When sites re-publish new versions of old chapters, Poketo shows inaccurate "new chapter" notifications.
For some sites (eg. Mangadex), older chapters are updated with new translations or better scans. These have a new "published at" date, which Poketo uses to track reading progress. Old chapters show up as new chapters, and are marked as unread in the list. It's a weird experience, to see a notification that there's a new chapter only to find it's a re-release of an old one.
For an example of a series that does this, check out Tensei Shitara Slime Datta Ken.