Hello. I am having an issue with Calibre and Calibre Companion (Android) where a certain book is not being sorted properly. My sort order on PC and Android is by Author first, and then by Book Order (a custom column). It looks like it's working fine for every other book, but I have over 300 books, so maybe it's occurring elsewhere and I just haven't seen it.
Here is a screenshot of my Tweaks tab that shows the sort order:
Here are screenshots where it's obviously not being sorted by Author for just this one book.
Any thoughts or suggestions on what could be causing this? I've tried copying the Author name from one of the properly sorted books and pasting it in the book that's out of order, but this doesn't resolve the issue. And as I said earlier, this sort issue carries over into Calibre Companion for Android.