Genres are not taken over

In "Charts/Graphs, Graphics, Genres" 125 books without genres were listed on 05/17. But only 10 to 15 books were without genres. I have added these thereupon. In my catalog https://www.librarything.de/catalog/birder4106 there are no more books without genres.
Nevertheless, a new call, despite a refresh cmd+r still shows me 113 books without genres.
The same behavior shows up when calling my catalog via LT.com (https://www.librarything.com/catalog/birder4106?genre=68&collection=-1).

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>1 birder4106: no comment on the bug, but just wanted to say it is nice to see someone else using deepl:)

1. go to https://www.librarything.com/stats/birder4106/genre and look at the Fiction vs. Nonfiction graph. Now, look at https://www.librarything.com/catalog/birder4106?genre=68&collection=-1. See 113 books are being marked as "Not set" for this graph.
2. In the catalog, look at a Display Style with Genres, and see that there are genres filled in, both at the book level (in the catalog) and at the work level for many of them (e.g. https://www.librarything.com/work/26195605/book/197330601).

Is this a bug? How often do the charts get updated?

The Fiction vs. Nonfiction graph shows the number of books that are marked as Fiction & Literature or Nonfiction or both or neither, so the Not set ones on that graph indicates ones that are not set as either Fiction & Literature or Nonfiction. The charts are built using current data.