I’m not sure if somebody has reported this before but I’ve discovered a bug when using a collection with a mix of tabbed and non-tabbed books.
Suppose that I have a collection with 2 books in it. If the first book in the collection has tabs, but the second one doesn’t, then the tab views in the first book would work without issues. However, if you were to reverse the order so that the first book doesn’t have tabs, but the second one does, then you would have issues: the tabs in the first chapter of the second book would not work. I discovered that in this scenario, all of the chapters in that tab would shift one chapter, so the tabs in chapter 2 onwards would still work but they will display the content of the previous chapter.
I hope that is clear enough to understand. And please look into that. Thank you.