hyperref makes `\ref{x}` point to last page for`\label{x}` when that is followed by `\begin{enumerate}` (with enumerate package)

Question

The following document shows the problem:

\documentclass{scrreprt}
\usepackage{amsmath}
\usepackage{amsthm}
\usepackage{enumerate}
\usepackage{hyperref}
\newtheorem{thm}{Theorem}[chapter]
\begin{document}
  \chapter{first chapter}
  The reference to theorem \ref{thm:structureunoriented1} is correctly displayed (2.1 in this case) but points to the last page of the document with {\ttfamily warning  (pdf backend): unreferenced destination with name 'thm.2.1'} during compilation.
  \newpage
  \chapter{second chapter}
  \begin{thm}\label{thm:structureunoriented1}
%%    \phantom{x}  % Uncommenting this line prevents the problem
    \begin{enumerate}[(i)]
        \item This is the part 1 of the theorem I want to refer to.
        \item This is the part 2 of the theorem I want to refer to.
    \end{enumerate}
  \end{thm}
  \newpage
  \chapter{third chapter}
  This is where I land when klicking on the reference.
\end{document}

I'm not sure who the culprit is but one of the packages hyperref and enumerate is, right? Is there a way to avoid that problem? After all \phantom is not very elegant. Putting the label after \end{enumerate} works but then I land on the bottom of the theorem.