enumerate doesn't work correctly with nested description or itemize environments

[FrankMittelbach]

The inner unnumbered environment picks up the outer counter and sets and increments it

\DocumentMetadata{pdfversion = 2.0, testphase = {phase-III,math,title,table,firstaid}, lang = en}
\documentclass[a4paper,12pt]{article}

\begin{document}

\begin{enumerate}
\item foo
      \begin{description}
        \item xxx
        \item xxx
        \item xxx
       \end{description}
  \item
    bar
      \begin{itemize}
        \item xxx
        \item xxx
        \item xxx
        \item xxx
        \item xxx
       \end{itemize}
 \item
    baz
      \begin{enumerate}
        \item ok
        \item ok
       \end{enumerate}
 \item
    ok
\end{enumerate}
\end{document}

A clear case of incorrectly implemented legacy support ...