footnotes in caption are wrong ...

[u-fischer]

\DocumentMetadata{uncompress,testphase={phase-III}}
\documentclass{article}
\begin{document}

\begin{figure}
    \begin{minipage}{5cm}
    \caption[Blub]{Footnote\footnote{a footnote}} 
    \end{minipage}   
\end{figure}
\end{document}