Error based on interaction of thmtools and an implemantation of a refable delayed proof environment

I added the solution by @egreg to the question Reference to proof prints section instead to my document and it did not work throwing the error: Undefined control sequence. \@hyper@@anchor ...r@spot {#2#3}\let \put@me@back

The culprit as it turns out is thmtools:

\documentclass{article}
\usepackage{amsthm}
\usepackage[colorlinks]{hyperref}
\usepackage{cleveref}
\usepackage{thmtools}   %Only addition compared to the used solution

\newtheorem{theorem}{Theorem}
\newenvironment{delayedproof}[1]
 {\begin{proof}[\raisedtarget{#1}Proof of \Cref{#1}]}
 {\end{proof}}
\newcommand{\raisedtarget}[1]{%
  \raisebox{\fontcharht\font`P}[0pt][0pt]{\hypertarget{#1}{}}%
}
\newcommand{\proofref}[1]{\hyperlink{#1}{proof}}

\begin{document}
\section{Theorems}
\begin{theorem}\label{thm:some-theorem}
This is a theorem.
\end{theorem}

For an intuition, see the \proofref{thm:some-theorem}.

\appendix
\section{Proofs}
\begin{delayedproof}{thm:some-theorem}
This is a proof.
\end{delayedproof}
\end{document}

I am now interested in answering what exactly breaks and if there is a better, i.e. the hyperlink does the right thing, fix that what I have come up with:

\newenvironment{delayedproof}[1]
 {\raisedtarget{#1}\begin{proof}[Proof of \Cref{#1}]}
 {\end{proof}}
\newcommand{\raisedtarget}[1]{%
  \raisebox{\fontcharht\font`P}[0pt][0pt]{\hypertarget{#1}{}}%
}