在tcolorbox 字数太多环境溢出

各位同志好, 请教下有没有人遇到过在tcolorbox环境中, 页数比较少的时候正常显示, 字多太多就显示异常
正常:

异常:

tex原代码:
documentclass[twoside,10.5pt]{article}
usepackage{mystyle}
usepackage{graphicx}
usepackage{subcaption}
usepackage{multirow}
usepackage{amsmath}
usepackage{tabularx}
usepackage{caption}
usepackage{algorithm}
usepackage{algorithmicx}
usepackage{algpseudocode}

usepackage{indentfirst}
usepackage{pdfpages}
usepackage[many]{tcolorbox}

%参考文献设置
usepackage[backend=biber,style=gb7714-2015,gbalign=gb7714-2015,gbpub=false,gbnamefmt = lowercase]{biblatex}
addbibresource[location=local]{mybibfile.bib}

% usepackage{endnotes}
% renewcommand{enoteheading}{vspace*{0.5cm}leavevmode}

makeatletter

newtcolorbox{ubox}{
breakable,
height fixed for=all,
height fill,
colback=white,
arc=0mm,
outer arc=0pt,
width=1.01linewidth,
boxrule=.5pt,
colframe=black,
left=1.2pt,
right=1.2pt,
top=0mm,
before upper={parindent24bp}
}

newenvironment{breakablealgorithm}
{% begin{breakablealgorithm}
begin{center}

 \refstepcounter{algorithm}% New algorithm
 \hrule height.8pt depth0pt \kern2pt% \@fs@pre for \@fs@ruled
 \renewcommand{\caption}[2][\relax]{% Make a new \caption
   {\raggedright\textbf{\ALG@name~\thealgorithm} ##2\par}%
   \ifx\relax##1\relax % #1 is \relax
     \addcontentsline{loa}{algorithm}{\protect\numberline{\thealgorithm}##2}%
   \else % #1 is not \relax
     \addcontentsline{loa}{algorithm}{\protect\numberline{\thealgorithm}##1}%
   \fi
   \kern2pt\hrule\kern2pt
 }

}{% end{breakablealgorithm}

 \kern2pt\hrule\relax% \@fs@post for \@fs@ruled

end{center}
}
makeatother

begin{document}
includepdf[pages={1-3}]{cover.pdf}
captionsetup{labelformat=default,labelsep=space}

% tableofcontents% 添加目录
setcounter{page}{2}
thispagestyle{fancy}
vspace{-0.30cm}
begin{ubox}
setlength{parindent}{2em}

input{./body/summury.tex}

input{./body/background.tex}

newpage
input{./body/reference.tex}

newpage
input{./body/DRO-PS}

newpage
input{./body/DRO-WSN.tex}

newpage
input{./body/DRO-SWSS.tex}

vspace{0.30cm}
noindenthspace*{-0.009textwidth}rule{1.019textwidth}{0.5pt}
end{ubox}
end{document}

报错:

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