The link to a book's editions page that says "x editions" often has the incorrect number of editions. I think this is because merged books are still counted in the number.

For example: this book. It says "5 editions" but there are only 3 because I merged 2 duplicates. That merge was a couple of days ago; if there's any kind of refresh on the editions count, I would expect it to have happened by now.

ETA another example: this book. It says "7 editions" but there are only 6 because I merged 1 duplicate. That merge was over a month ago (December 11th).