Bottom margin is smaller with no reason in IEEEtran.cls

Question

I"m writing a IEEE Transactions paper using the IEEEtran.cls provided by the IEEE website. With no reason the bottom margin is smaller than the one set by IEEE (and one of my reviewers noticed that). I'm writing the following code,

\documentclass[10pt, twocolumn, twoside, journal]{IEEEtran}

\usepackage{amsmath, amsfonts, amssymb, color, enumerate, amsthm, graphicx}
\usepackage{tikz, subcaption, cite}
\usepackage{color, xcolor, soul, bm}
\usepackage{marginnote}
\PassOptionsToPackage{hyphens}{url}\usepackage{hyperref}
\hypersetup{
  colorlinks   = true, %Colours links instead of ugly boxes
  urlcolor     = blue, %Colour for external hyperlinks
  linkcolor    = blue, %Colour of internal links
  citecolor    = green %Colour of citations
}
\usepackage[normalem]{ulem}
\newtheorem{problem}{Problem}
\newtheorem{theorem}{Theorem}
\newtheorem{corollary}{Corollary}
\newtheorem{assumption}{Assumption}
\newtheorem{proposition}{Proposition}
\newtheorem{lemma}{Lemma}
\newtheorem{remark}{Remark}
\newtheorem{definition}{Definition}
\newtheorem{example}{Example}
\usepackage{epsfig} 
\usepackage{psfrag}
\DeclareMathOperator{\diag}{diag}
\usepackage{tcolorbox}
\newcommand{\JW}[1]{{\color{red}#1}}


\usepackage{algorithm}
\usepackage{algpseudocode}
\allowdisplaybreaks

\def\endtheorem{\hspace*{\fill}~\IEEEQEDopen\par\endtrivlist\unskip}
\def\endlemma{\hspace*{\fill}~\IEEEQEDopen\par\endtrivlist\unskip}
\def\endproposition{\hspace*{\fill}~\IEEEQEDopen\par\endtrivlist\unskip}
\def\endexample{\hspace*{\fill}~\IEEEQEDopen\par\endtrivlist\unskip}
\def\endremark{\hspace*{\fill}~\IEEEQEDopen\par\endtrivlist\unskip}
\def\enddefinition{\hspace*{\fill}~\IEEEQEDopen\par\endtrivlist\unskip}
\begin{document}
\title{Security of Vehicle Platooning: A Game-Theoretic Approach}

\author{M.
\thanks{M., E-mail: {\tt \{email\}@domain}.}%
\thanks{M., E-mail: {\tt email@domain}.}
\thanks{N., E-mail: {\tt email@domain}.}
}

\newcommand{\ty}{\color{yellow}}
\newcommand{\tb}{\color{blue}}
\newcommand{\tr}{\color{red}}
\newcommand{\tg}{\color{green}}

\maketitle

\thispagestyle{empty}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{abstract}
abstract goes here ...
\end{abstract}

\begin{IEEEkeywords}
    my keywords
\end{IEEEkeywords}

My paper contents ...

\bibliographystyle{IEEEtran}
\bibliography{IEEEabrv,refs}

\end{document}