Beamer 中的脚注错误重复（与注释一起编译时）

Question

考虑以下 MWE：

\documentclass{beamer}
%\setbeameroption{show notes on second screen}

\begin{document}
    \begin{frame}{Why are \protect\emph{we}\footnote[frame]{The Steering Council} here?}
    \note{A few presenter's notes.}
        \begin{itemize}
            \item We are looking for \emph{new ways} to ...
\pause      \item We search for strategies, which ...
\pause      \item The Steering Council is the body that coordinates ...
        \end{itemize}
    \end{frame} 
\end{document}

按预期工作，直到我取消注释在第二个屏幕上显示注释的选项：

有人能解释一下吗？