I think you're misunderstanding. It's not that I'm missing various cursors (as far as I know), it's that the very last cursor in the themes directory isn't showing in the configuration list. In the first screenshot above. I have 3 themes in the directory and only the first two show - the last one doesn't. The last ones in the other two screenshots don't show either.
When I first saw it I fooled with it a bit, moving a few batches in and out, whatever the last theme happened to be it never showed. It does seem to be consistent.
It could just be on my machine, but it does seem like an odd thing to be machine-specific.