Grr, I don't have time today to look and see what books are missing, but it's a few hundred for me. I have them all in Calibre, but I suppose I should add it to my To Do list just in case.
I kind of like the ability to look at the list by cover. But the sorting is just...so Kobo. I guess the alphabet goes in a different order for them

And the date added column is 99% incorrect now.
After all those Google vs Kobo questions in the last survey I laughed when I saw the three dots. I knew right where to go to find the
download export option.
All of my books show as "unread" because I never sync my mini. I have no plans to do so, plus the fact most of my books aren't even on it. So Kobo can just think I'm not much of a reader, just a book collector.