Synctex's go to source vs. comment package

Question

In 2013, there was Synctex Go to source from pdf and comment package.

Now it is 2021 and the problem still exists: for any parts within a comment-environment (in the given example, it is len for English), inverse search does not work, meaning the cursor does not jump to the relevant source code part.

It is arguably easy to reproduce if you compile the MWE below. If you comment out the lines with \begin{len} and \end{len} for one environment-occurrence in the document and compile it again, inverse search works again.

This is actually somewhat disheartening. So far, I have not run into these kinds of big problems with something that much of a problem, imho, for the workflow with LaTeX and my favorite editor in general.

I'd like to make sure: is the usage of comment-environment and the adversarial consequence (for the lack of a better word) of its mechanism towards synctex not been addressed? Or are there known workarounds?

MWE

\documentclass[parskip=full]{scrartcl}
\usepackage{lmodern}
\usepackage{comment}
\usepackage[T1]{fontenc}
%%make the ENGLISH version (main!)
%\includecomment{len}
%\excludecomment{lde}
%---does NOT work, throws a runaway error:
%\newenvironment{langen}{%
%\begin{len}\selectlanguage{english}}
%{\end{len}}
%---does work:
\newenvironment{langen}{%
\selectlanguage{english}}
{}
%%make the German version
\includecomment{lde}
\excludecomment{len}
\begin{lde}
\usepackage[german]{babel}
\end{lde}
\newenvironment{langde}{%
\selectlanguage{german}}
{}
\begin{len}
\usepackage[english]{babel}
\end{len}
\listfiles
\begin{document}
\begin{langen}
\begin{len}
\begin{center}\huge
The Title in English
\end{center}
\end{len}
\end{langen}
\begin{lde}
\begin{langde}
\begin{center}\huge
Titel in deutsch
\end{center}
\end{langde}
\end{lde}
\begin{len}
\begin{langen}
Abc.
Def.




EGJSDFGJ.
DDDDDDDDD.
EEEEEEEEE.
FFFFFFF.
GGGGGG.
\end{langen}
\end{len}
\clearpage
\begin{len}
\begin{langen}
Page 2: some words to form a sentence.
\end{langen}
\end{len}
\begin{lde}
\begin{langde}
Seite 2: Einige deutsche Worte.
\end{langde}
\end{lde}
\end{document}