Markdown toggle list not showing

Hi! I recently got started with flet and would like to display some markdown code.
I have the following markdown code on a file:

<details>
  <summary>Click me</summary>
  
  1. item 1
  2. item 2
     * thing 1
     * thing 2
  
</details>

and this python code to display it:

        ft.Markdown(
            """
            <details>
              <summary>Click me</summary>
  
              1. item 1
              2. item 2
                 * thing 1
                 * thing 2
  
            </details>

            """ ,
            selectable=True,
            extension_set=ft.MarkdownExtensionSet.GITHUB_WEB,
            code_theme="a11y-light",
            on_tap_link=lambda e: page.launch_url(e.data),
            expand=True
        )

The markdown code should display a collapsable button, like this:

But instead just shows the content:

This markdown editor flet example also doesn't show this.

Flet version:

Name: flet
Version: 0.9.0
Summary: Flet for Python - easily build interactive multi-platform apps in Python
Home-page: None
Author: Appveyor Systems Inc.
Author-email: hello@flet.dev
License: Apache-2.0
Location: /home/phi/pythonRepos/notes/venv/lib/python3.8/site-packages
Requires: packaging, qrcode, watchdog, flet-runtime, pydantic, websocket-client, copier, websockets
Required-by: 

I am using WSL2 on Windows 11.

Any help would be appreciated!

Start by reproducing the issue with the ft.Markdown entry point and the supplied details/summary example, using the reported Flet 0.9.0 configuration. Trace how the Markdown extension set handles details blocks; done when the example renders a collapsible control while preserving its nested list content.