Pausesubsections pauses even when there are none

Question

I have started writing a beamer, and up until now everything was going fine (I only had 1 section with no subsection). Of course, I got to the point where I wanted to add another section, but with several subsections inside it.

I have declared

\AtBeginSection{
    \begin{frame}
        \frametitle{Summary}
        \tableofcontents[currentsection, hideothersubsections, pausesubsections]
    \end{frame}
}

before I started the \begin{document} directive.

So I only had 1 generated slide for the first section, before I added the other section. Which is what I expected to have.

Things got messed up somehow when I added the second section, and the few subsections inside it (3 at the moment). For some reason, it now generates the first section slide 3 times... The other section is correctly paused at each subsection, but it's annoying that the first section "pauses" 3 times too...

Here is a preview of the complete code:

\documentclass[11pt]{beamer}

\AtBeginSection{
\begin{frame}
    \frametitle{Summary}
    \tableofcontents[currentsection, hideothersubsections, pausesubsections]
\end{frame}
}


\begin{document}
\section{Section 1}

\begin{frame}
\end{frame}

\begin{frame}
\end{frame}

\begin{frame}
\end{frame}

\begin{frame}
\end{frame}

\begin{frame}
\end{frame}

\begin{frame}
\end{frame}

\begin{frame}
\end{frame}

\begin{frame}
\end{frame}

\section{Work Environment}

\subsection{The team}
\begin{frame}
\end{frame}

\subsection{Learning stuff}

\begin{frame}
\end{frame}

\subsection{Tools to work with}

\begin{frame}
\end{frame}
\end{document}

I have tried to flush auxiliary files and re-compiling several times, making sure everything is correctly written etc... to no avail yet.

Any hindsights of what is going on ?

Answer 1

Workaround: only use pausesubsections for sections with > 0 subsections:

\documentclass[11pt]{beamer}

\usepackage{totcount}
\regtotcounter{section}

\usepackage{xcntperchap}
\RegisterCounters{section}{subsection}

\newcounter{totalsubsection}
\setcounter{totalsubsection}{0}

\preto\frame{\setcounter{totalsubsection}{\ObtainTrackedValueExp[\value{section}]{section}{subsection}}}


\AtBeginSection{
\begin{frame}
    \frametitle{Summary}
        \ifnum\value{totalsubsection}>0%
            \tableofcontents[currentsection, hideothersubsections, pausesubsections]
        \else%
            \tableofcontents[currentsection, hideothersubsections]
        \fi%
\end{frame}
}


\begin{document}
\section{Section 1}

\begin{frame}
\end{frame}

\begin{frame}
\end{frame}

\begin{frame}
\end{frame}

\begin{frame}
\end{frame}

\begin{frame}
\end{frame}

\begin{frame}
\end{frame}

\begin{frame}
\end{frame}

\begin{frame}
\end{frame}

\section{Work Environment}

\subsection{The team}
\begin{frame}
\end{frame}

\subsection{Learning stuff}

\begin{frame}
\end{frame}

\subsection{Tools to work with}

\begin{frame}
\end{frame}
\end{document}