subfloatrow and tabularx, wrong numbering of figure

Question

I wanted to "group" a figure and a table to get one figure. It has been proposed to use floatrow for this, with the possibility to remove the subcaptions later on (subfloatrow of package floatrow does not work without subcaptions).

But it seems, that the figure inside the environment will be counted (global figure number), even though it's in a subfloatrow!

The attached example shows the same source code with tabularx in the beginning and tabular in the end. One can see that the numbering starts with 2 instead of 1!

\documentclass{article}
\usepackage{caption,subcaption,tabularx,floatrow}

% Table float box with bottom caption, box width adjusted to content
\newfloatcommand{capbtabbox}{table}[][\FBwidth]

\begin{document}
\setcounter{figure}{0}
\begin{figure}[t!]
\ffigbox{
    \begin{subfloatrow}
        \ffigbox{%
          \rule{3cm}{3cm}%
        }{%
          \caption{A figure}%
        }
        \capbtabbox{%
          \begin{tabularx}{4cm}{cc} \hline
          Author & Title \\ \hline
          Knuth & The \TeX book \\
          Lamport & \LaTeX \\ \hline
          \end{tabularx}
        }{%
          \caption{A table}%
        }
    \end{subfloatrow}
    }{%
      \caption{A figure and a table}%
    }
\end{figure}
\end{document}

Has anybody an idea on how to prevent this? Is it a bug?

Answer 1

If I understand correctly, and you do not want the subcaptions, you only need two minipage environments without extra packages.

To add subcaptions to the table and the figure without inferering the figure counter, one option could be the same, but adding the package caption and using \caption* (with asterik) when needed. This is a MWE:

\documentclass{article}
\usepackage[english]{babel}
\usepackage{tabularx}
\usepackage{blindtext}
\usepackage{caption}
\usepackage[demo]{graphicx}

\begin{document}

\begin{figure}[htp]
\centering
\begin{minipage}{3cm}
\includegraphics[width=3cm,height=3cm]{/home/fran/MWE.png}
\end{minipage}\hspace{1cm}
\begin{minipage}{.4\textwidth}
  \begin{tabularx}{4cm}{cc} \hline
  Author & Title \\ \hline
  Knuth & The \TeX book \\
  Lamport & \LaTeX \\ \hline
  \end{tabularx}
\end{minipage}
  \caption{A figure and a table}%
\end{figure}

\blindtext

\begin{figure}[htp]
\centering
\begin{minipage}{3cm}
\includegraphics[width=3cm,height=3cm]{/home/fran/MWE.png}
\caption*{The figure}
\end{minipage}\hspace{1cm}
\begin{minipage}{.4\textwidth}
\caption*{The table}
  \begin{tabularx}{4cm}{cc} \hline
  Author & Title \\ \hline
  Knuth & The \TeX book \\
  Lamport & \LaTeX \\ \hline
  \end{tabularx}
\end{minipage}
  \caption{A figure and a table}%
\end{figure}

\end{document}