svjour3: Appendix table numbers increment +2 using table and tabularx

Question

I know that my question below may be similar like this one, nevertheless I kindly ask you for your patience, as I am using some different tabular environments.

The appendix of my document based on the Springer class svjour3 is full of tables, which need proper caption, label and floating. After some experiments with different column types and environments, I came to the point that the setup in MWE below is working well for the table style. However, I face the issue of wrong increment in table numbering - every table seems to consume 2 counting steps instead of one.

What is going wrong here and how can the table definition be improved? Thank you in advance!

\RequirePackage{fix-cm} 
\documentclass[smallextended]{svjour3}  
\smartqed  
\usepackage[utf8]{inputenc}
\usepackage[english]{babel}
\usepackage{tabularx}
\usepackage{multicol}
\usepackage{array}
\usepackage{booktabs} 
\usepackage{footnote} 
\usepackage{multirow}
\usepackage{ltablex} 
\newcolumntype{L}[1]{>{\raggedright\arraybackslash}p{#1}}
\renewcommand\tabularxcolumn[1]{L{#1}}
\keepXColumns
\newcolumntype{C}[1]{>{\centering\arraybackslash}m{#1}}

\begin{document}
\section{Normal section}
This is a standard main text.

\appendix
\setcounter{table}{0}
\renewcommand{\thetable}{\Alph{section}.\arabic{table}}
\section{Appendix Section 1}

\begin{table}[htb]
    \caption{Appendix Table 1}
    \label{tab:AppTable1}

    \begin{tabularx}{\linewidth}{@{}L{2.5cm}|X@{}} 
        \toprule
            \textbf{Col1} & \textbf{Col2} \\\midrule
            a & b \\
            \midrule
            c & d \\
            \bottomrule
    \end{tabularx}
\end{table}

\begin{table}[htb]
    \caption{Appendix Table 2}
    \label{tab:AppTable2}

    \begin{tabularx}{\linewidth}{@{}L{2.5cm}|X@{}} 
        \toprule
            \textbf{Col1} & \textbf{Col2} \\\midrule
            a & b \\
            \midrule
            c & d \\
            \bottomrule
    \end{tabularx}
\end{table}

\end{document}

Answer 1

The comments were helpful and pointed to the right direction. Replacing ltablex package with the xltabular package corrects the issue observed in labelling.