Incompatible with beamer: \footnote[frame] is not supported in \caption{...}

From TeX-SX question https://tex.stackexchange.com/q/554120.

beamer extends syntax of \footnote to \footnote<overlay spec>[options]{...}, where in options a new key frame is added. See documentation in beamer manual, sec. 12.12 and new implementation of \footnote here.

Currently, caption cannot handle that newly added frame key, and will pass the total options to \caption@footnotemark. This might cause error "Missing number, treated as zero" when options is given frame.

An example:

\documentclass{beamer}
\usepackage{caption}

\begin{document}
\begin{frame}
  \begin{figure}
    \includegraphics[width=.5\linewidth]{example-image}
    \caption{Duck\footnote[frame]{text}}
  \end{figure}
\end{frame}
\end{document}