100 `elegantbook`宏包的使用`biblatex`选项backref=true时跳转位置不准确？

Claim:这种跳转似乎只在pdflatex编译下可复现，在xelatex下跳转行为神秘...

如题，考虑如下的MWE：

elegantbook.cls可以在这里获取。

\begin{filecontents*}[overwrite]{refs.bib}
@book{anima,
  author       = {Aristotle},
  title        = {De Anima},
  date         = 1907,
  editor       = {Hicks, Robert Drew},
  publisher    = cup,
  location     = {Cambridge},
  keywords     = {primary},
  langid       = {english},
  langidopts   = {variant=british},
  annotation   = {A \texttt{book} entry with an \texttt{author} and an \texttt{editor}},
}
\end{filecontents*}
\documentclass[11pt]{elegantbook}
\title{An Elegant \LaTeX{} Template for Books}
\subtitle{Classic Elegant\LaTeX{} Template}
\author{Ethan Deng, Liam Huang, syvshc, sikouhjw \& Osbert Wang}
\institute{Elegant\LaTeX{} Program}
\date{Dec. 31, 2022}
\version{4.5}
\bioinfo{Bio}{Information}
\extrainfo{\textcolor{red}{\bfseries Caution: This template will no longer be maintained since January 1st, 2023.}}
\logo{example-image-duck.pdf}
\cover{example-image-duck.pdf}
\ExecuteBibliographyOptions{backref=true}% add backref support here
\addbibresource{refs.bib}% bib
\begin{document}

\frontmatter

\maketitle%<-

\mainmatter

\lipsum[1-10]

\section{Bibliography}

This template uses biblatex to generate the bibliography, the default citestyle and bibliography style are both \lstinline{numeric}. Let's take a glance at the citation effect. ~\cite{anima} use data from a major peer-to-peer lending

In order to get the editors' auto-completion working, you need to add following code in your preamble:

\lipsum

\printbibliography[heading=bibintoc, title=\ebibname]

\end{document}

情况一：

含有\maketitle，文末参考文献的索引将错误地跳转到「封面首页」

情况二：

如果去掉\maketitle，则行为符合预期

问题：

• 这种现象出现的原因是什么？
• 在不改动「elegantbook.cls」的绝对前提下，修复\ExecuteBibliographyOptions{backref=true}在添加了\maketitle时功能的最佳实践是？

Edited

一点探索，基本文档类book使用\maketitle不会有这个问题：

\begin{filecontents*}[overwrite]{refs.bib}
@book{anima,
  author       = {Aristotle},
  title        = {De Anima},
  date         = 1907,
  editor       = {Hicks, Robert Drew},
  publisher    = cup,
  location     = {Cambridge},
  keywords     = {primary},
  langid       = {english},
  langidopts   = {variant=british},
  annotation   = {A \texttt{book} entry with an \texttt{author} and an \texttt{editor}},
}
\end{filecontents*}
\documentclass[11pt]{book}
\usepackage{lipsum}
\title{test}
\usepackage[backref=true]{biblatex}
\addbibresource{refs.bib}% bib
\usepackage{hyperref}
\begin{document}

\frontmatter

\maketitle%<-

\mainmatter

\lipsum[1-10]

\section{Bibliography}

This template uses biblatex to generate the bibliography, the default citestyle and bibliography style are both Let's take a glance at the citation effect. ~\cite{anima} use data from a major peer-to-peer lending.

\lipsum

\printbibliography

\end{document}

因此问题应该出在elegantbook自定义的封面命令中....

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