dvisvgm backend: issues with beamer standard animations/transitions (\pause)

Hi!
I am trying to translate some PDf slides (LaTeX beamer) to svg to get advantage of the \animate package without needing a non-free PDF viewer. However, I am having some issues with standard beamer animations when using the dvisvgm backend, in different scenarios.
This is a simple example that does not work as expected when generating the SVG:

\documentclass[dvisvgm,aspectratio=169]{beamer}
\setbeamertemplate{navigation symbols}{}

\begin{document}

\begin{frame}
  \begin{itemize}
  \item 1
    \pause

  \item 2
    \pause

  \item 3
    \begin{block}{foo bar}
      foo bar
    \end{block}
  \end{itemize}
\end{frame}

\end{document}

After latex example.tex; latex example.tex; dvisvgm --font-format=woff --zoom=-1 -p1,- example.dvi three SVG files are generated, but the beamer block is visible in all of them instead of only in the last one.

I am using LaTeX-2020 and dvisvgm 2.9.1

Regards,
E

Reproduce the issue with the provided example.tex using two LaTeX runs followed by the dvisvgm command, then inspect the generated SVG files for the three overlays. Trace how beamer's \pause and block content are represented for the dvisvgm backend; done means the block appears only in the final SVG, as expected.