Correcting labels numbering of ThreePartTable containing multiple tabularx

Question

Here is a working example illustrating my problem:

\documentclass[12pt]{article}
\usepackage{booktabs, ltablex, siunitx, threeparttablex}
\usepackage[labelsep=endash, skip=5pt]{caption}
\newcommand{\rowgroup}[1]{\hspace{-2em}#1}  % for indentation tables
\sisetup{
    group-separator={,},
    group-four-digits=true,
    table-space-text-pre    = (,
    table-space-text-post   = ),
    table-space-text-post= \textsuperscript{*},
    retain-explicit-plus,
    input-open-uncertainty  = ,
    input-close-uncertainty = ,
    table-align-text-pre    = false,
    table-align-text-post   = false,
    round-mode=places,
    round-precision = 2,
    tight-spacing = true 
}
\keepXColumns
\usepackage{setspace}


 \begin{document}

\setstretch{0.85}


First table is Table \ref{tab:t1}:

\begin{ThreePartTable}
\small

\begin{TableNotes}[flushleft]\footnotesize
    \item \textit{Notes:} Bla ...
\end{TableNotes}

\begin{tabularx}{0.9\textwidth}{ @{\hspace*{\leftmargin}}
    l  S[table-format=+1.2]  S[table-format=-1.2]  }

\caption {Alternative explanations; estimates for firm size regressions}\label{tab:t1} \\ \toprule

& {Low unemployment} & {High unemployment} \\
& {(1)} & {(2)} \\ \cmidrule(r){2-3}
\endfirsthead

\multicolumn{3}{c}%
    {\vspace{5pt}{\tablename\ \thetable{} -- continued from previous page}} \\ \midrule
& {Low unemployment} & {High unemployment} \\
& {(1)} & {(2)} \\ \cmidrule(r){2-3}
\endhead

\multicolumn{3}{c}%
    {\textit{Continue to next page}} \\ \midrule
\endfoot

\endlastfoot

\addlinespace
\rowgroup{\textit{Panel A: Buniness cycle conditions}}
    & {\phantom{Low unemployment}} & {\phantom{High unemployment}} \\ \addlinespace

{Year 1}
& {...} & {...}\\
& ({...}) & ({...}) \\ 
{Year 2}
& {...} & {...} \\
& ({...}) & ({...}) \\ 
{Year 3}
& {...} & {...} \\
& ({...}) & ({...}) \\ \midrule

\end{tabularx}
\vspace{-20pt}  

\begin{tabularx}{0.9\textwidth}{ @{\hspace*{\leftmargin}}
    l  S[table-format=-1.2]  S[table-format=-1.2]  }

& {Low unemployment} & {High unemployment} \\
& {(1)} & {(2)} \\ \cmidrule(r){2-3}

\addlinespace
\rowgroup{\textit{Panel B: ...\phantom{iness cycle conditions}}}
& {\phantom{Low unemployment}} & {\phantom{High unemployment}} \\ \addlinespace

{Year 1}
& {...} & {...}\\
& ({...}) & ({...}) \\ 
{Year 2}
& {...} & {...} \\
& ({...}) & ({...}) \\ 
{Year 3}
& {...} & {...} \\
& ({...}) & ({...}) \\ 

\bottomrule
\insertTableNotes
\endlastfoot

\end{tabularx}

\end{ThreePartTable}

Second table is Table \ref{tab:t2}:

\begin{table}[h!]
    \caption{\label{tab:t2} The second table}
    \centering
    \begin{tabular}{ccc}
        \toprule
        column 1 & column 2 & column 3 \\ \midrule
        ... & ... & ... \\
        ... & ... & ... \\ \bottomrule
    \end{tabular}
\end{table}


\end{document}

The issue is that the labels numbering is inflated by one when compiling first table, so that the second table appears to be Table 3, and not Table 2. Thanks for any suggestions.

EDIT:

For those interested in why I actually need two tabularx nested inside the ThreePartTable environment, see this question. In short, I use one tabularx for each panel of the table in order to be able to flexibly set the siunitx columns in each panel.

Answer 1

A workaround consists in adding, just after \begin{table}[h!] for the next table:

\addtocounter{table}{-1}

Answer 2

Sorry, don't have the right to add a comment yet, so have to post this as an answer. The problem is that you are using 2 x tabularx (so basically 2 tables) to generate the first table. There is not need for this. Make the first table so that you generate a single table with 3 columns and 5 rows. You can use http://www.tablesgenerator.com/ initially to set up your table and then change it accordingly if you want to use tabularx instead of tabular.