I'm having an issue sorting bookshelves such that any authors series show up in chronological order. Either my metadata and metadata plugboard are off, or there is a bug in the Kobo 2.5.1 firmware, or I'm lost
I have my "Historical Fiction" book shelf set to sort by Author. Within this shelf I have a lot of series, as well as stand alone books by the same series author. But the Kobo Aura is displaying such that books in a series are "broken up" by other books from the same author, such that they are displayed first by author, then by title, instead of keeping a series together.
So, for example, I have the the "Saxon Chronicles" series by Bernard Cornwell (consists of 6 books, all on my Kobo), as well as other books by Bernard Cornwell, both stand alones and series. My metadata plugboard for the KoboTouchExtended plugin is set up as {series}{series_index:0>2s| - | - }{title}, with the destination field set to Title. Here's how it displays in my Historical Fiction book shelf on the Kobo Aura:
Burning Land
The Saxon Chronicles - 5
Bernard Cornwell
A Crowning Mercy
Bernard Cornwell
Death of Kings
The Saxon Chronicles - 6
Bernard Cornwell
Enemy of God
Warlord Chronicles - 2
Bernard Cornwell
Excalibur
Warlord Chronicles - 3
Bernard Cornwell
Heretic
Grail Quest - 3
Bernard Cornwell
The Last Kingdom
The Saxon Chronicles - 1
Bernard Cornwell
Lords of the North
The Saxon Chronicles - 3
Bernard Cornwell
The Pale Horseman
The Saxon Chronicles - 2
Bernard Cornwell
Stonehenge
Bernard Cornwell
Sword Song
The Saxon Chronicles - 4
Bernard Cornwell

and