See the first screenshot in https://invent.kde.org/plasma/plasma-desktop/-/merge_requests/2392#note_996670 @redstrate requested that this be reported, see the comment. This happened with the neon unstable packages from ~4 days ago, in a vm with the screen dimensions set to 1024x768. (I think it also happened with my self-compiled workspace, but I'm not sure - with the patches from the MR applied it doesn't happen anymore as everything fits in one line, but this is purely an accident)