Table numbering incorrect

Since trying to fix the problem described in this question: https://tex.stackexchange.com/questions/185905/tabularx-moving-table-to-next-page-ignoring-optional-arguments?noredirect=1#comment429924_185905

I have removed the offending Table and now noticed that my Tables have all been renumbered in the following convention: 1, 3, 5.

Trashing Aux Files does not fix the problem.

As per request, here is MWE which the table numbers as 1, 3, 5. Removing the \usepackage{ltablex} cures the problem.

\documentclass{article}

\usepackage{titlesec}
\titleformat{\section}{\large}{\thesection}{1em}{}
\titlespacing{\section}{0pt}{2.5ex}{2.5ex}
\titleformat{\subsection}{\small}{\thesubsection}{1em}{}
\titlespacing{\subsection}{0pt}{2.5ex}{0ex}
\titleformat{\subsubsection}{\sffamily\itshape}{\thesubsubsection}{1em}{}
\titlespacing{\subsubsection}{0pt}{1.5ex}{0ex}
\titleformat{\paragraph}[runin]{\normalfont\normalsize}{\theparagraph}{1em}{}
\titleformat{\subparagraph}[runin]{\normalfont\normalsize}{\thesubparagraph}{1em}{}

\usepackage{ltablex}

\usepackage{appendix}

\usepackage{tabularx}
\usepackage{booktabs}

\title{Minimal Working Example}
\date{}
\author{Author}

\begin{document}
\maketitle
\listoftables

\section{Section 1}

\begin{table}[h]
\centering
\sffamily
\begin{tabularx}{0.90\textwidth}{ X X X }
\toprule
\multicolumn{3}{ c }{Multicolumn} \\
\textbf{1}  & \textbf{2}    & \textbf{3} \\

\bottomrule
\end{tabularx}
\end{table}

\begin{table}[h]
\centering
\sffamily
\begin{tabularx}{0.90\textwidth}{ X X X }
\toprule
\multicolumn{3}{ c }{Multicolumn} \\
\textbf{1}  & \textbf{2}    & \textbf{3} \\

\bottomrule
\end{tabularx}
\end{table}

\begin{table}[h]
\centering
\sffamily
\begin{tabularx}{0.90\textwidth}{ X X X }
\toprule
\multicolumn{3}{ c }{Multicolumn} \\
\textbf{1}  & \textbf{2}    & \textbf{3} \\

\bottomrule
\end{tabularx}
\end{table}

\end{document}


Solved: As per one of the suggested answers to the other problem I had invoked the ltablex package in the Pre-Amble. Removing this has removed the problem.