Lineno and figures

Question

I am writing a document to submit to a journal and I am facing this weird problem : I am using the lineno package before submitting the paper and when I am loading it the last two figures of my document disappear! I have no idea where does this comes from and it's very difficult to reproduce it in a MWE.

The full code can be found here

It is strange that this happens even if I just include the package i.e. \usepackage{lineno}, without include \linenumbers.

With \include{lineno}

Without \usepackage{lineno}

Any idea on what that might be happening?

A MWE is the following

\documentclass[epj, twocolumn]{webofc}
\usepackage[varg]{txfonts}   % Web of Conferences font

\usepackage{lineno}
\usepackage{hyperref}
\usepackage{amsmath}
\usepackage{float}

\let\oldbibitem\bibitem
\def\bibitem{\vfill\oldbibitem}

\begin{document}
Some text

\begin{figure}[h]
    \centering
    \includegraphics[width=0.99\columnwidth,clip]{subthreshold.png}
    \caption{Comparison between present data (black points) and ENDF/B-VII.1 evaluation (red line) in the energy range $100\;keV-600\;keV$. Data is shown using a binning of 2000 bins per energy decade.}
    \label{subthreshold}
\end{figure}

\begin{figure}[h]
    \centering
    \includegraphics[width=0.99\columnwidth,clip]{subthreshold.png}
    \caption{Comparison between present data (black points) and ENDF/B-VII.1 evaluation (red line) in the energy range $100\;keV-600\;keV$. Data is shown using a binning of 2000 bins per energy decade.}
    \label{subthreshold}
\end{figure}

\begin{figure}[h]
    \centering
    \includegraphics[width=0.99\columnwidth,clip]{subthreshold.png}
    \caption{Comparison between present data (black points) and ENDF/B-VII.1 evaluation (red line) in the energy range $100\;keV-600\;keV$. Data is shown using a binning of 2000 bins per energy decade.}
    \label{subthreshold}
\end{figure}

\begin{figure}[h]
    \centering
    \includegraphics[width=0.99\columnwidth,clip]{subthreshold.png}
    \caption{Comparison between present data (black points) and ENDF/B-VII.1 evaluation (red line) in the energy range $100\;keV-600\;keV$. Data is shown using a binning of 2000 bins per energy decade.}
    \label{subthreshold}
\end{figure}

\begin{figure}[h]
    \centering
    \includegraphics[width=0.99\columnwidth,clip]{subthreshold.png}
    \caption{Comparison between present data (black points) and ENDF/B-VII.1 evaluation (red line) in the energy range $100\;keV-600\;keV$. Data is shown using a binning of 2000 bins per energy decade.}
    \label{subthreshold}
\end{figure}

\end{document}

The log output can be found here

From the 5 figures, when I include lineno, only the first 3 appear.

Note that I am running the code on shareLaTeX.