reledpar (& thalie)：选项 advancedshiftedpstarts 会打乱段落开头和行号

Question

我正在尝试使用该advancedshiftedpstarts选项reledpar排版戏剧文本的平行双语版本thalie；左页是散文版本，右页是诗行。我想使用该选项避免段落之间的空白advancedshiftedpstarts；不幸的是，它会破坏文本行的输出，也会扰乱右页的行数（右页显示的最后一行应该是第 5 行）：

\documentclass [12pt, a4paper, pagesize] {scrbook}
\usepackage [UKenglish, german] {babel}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{microtype}
\usepackage{libertine}

\usepackage{blindtext}

\usepackage[characterstyle=imprimerie-prose]{thalie}

\usepackage{reledmac}
\usepackage[advancedshiftedpstarts]{reledpar}
%%\usepackage{reledpar}


\usepackage{hanging}

%% adjusting hanging for each spoken bit and adjusting correct length of second part of a broken verse
%% see: https://tex.stackexchange.com/questions/545307/thalie-split-verses-adjusting-vertical-alignment
\newlength{\brokenverse}
\renewcommand*{\speakswithoutdirection}[1]{%
  \settowidth{\brokenverse}{\textsc{#1}.}%
  \hangpara{2\parindent}{1}\noindent\textsc{#1}.%
}
\makeatletter
\renewcommand{\resumeverse}{%
  \hspace{\@verseadjust}\hspace{\dimexpr\dimen\@ne-\brokenverse-2em}
}
\makeatother


\linenummargin{right}

%%line numbers for broken half lines on last bit of line
\lockdisp{last}

%%line numbers on right pages without R flag
\setRlineflag{}

%%suppress line numbers on left pages
\firstlinenum{10000000}

\begin{document}

\begin{dramatis}[hidden]
    \character[cmd={Buckingham}]{Buckingham}
    \character[cmd={Norfolk}]{Norfolk}
\end{dramatis}



\begin{pages}
    \begin{Leftside}
        \beginnumbering
        \pstart\Buckingham  \blindtext\pend

\pstart\Norfolk  \blindtext\pend

\pstart\Buckingham  \blindtext\pend
        \endnumbering
    \end{Leftside}


    \begin{Rightside}
        \beginnumbering
        \selectlanguage{UKenglish}
        \pstart\Buckingham Good morrow and well met. How have ye done\\Since last we saw in France?\pauseverse\startlock\pend

\pstart\Norfolk\resumeverse\endlock I thank your grace,\\Healthful, and ever since a fresh admirer\\Of what I saw there.\pauseverse\startlock\pend

\pstart\Buckingham\resumeverse\endlock An untimely ague\\Stayed me a prisoner in my chamber when\pend
        \endnumbering
    \end{Rightside}
\end{pages}
\Pages


\end{document}

如果没有该advancedshiftedpstarts选项，所有行看起来都正常，并且显示的行号是正确的： 我错过了什么advancedshiftedpstarts？

非常感谢您的帮助。