Source: util-linux Version: 2.35.1-1 util-linux installs libraries into /lib and /usr/lib. It has been requested that it should install everything into /usr/lib. AFAIK there is no tracking bug for it, so here it is.
Michael Biebl has provided a merge request at https://salsa.debian.org/debian/util-linux/-/merge_requests/8/diffs Chris