I went to the Kagi homepage, and made sure my custom CSS was disabled (https://kagi.com/?no_css). I clicked on "search options" and then the "lenses" option (which says "forums").
In the menu, it shows my lenses, and then at the bottom of the list is just a blank option.

I'd expect there to be some text for that option. It seems to go to https://kagi.com/settings?p=lenses, so maybe it should say "lenses settings"?