Component.render is not a function

[novel saffron]

I'm new to Astro and currently working on a website on which I want to render articles from a collection. Some of them are written with the .mdx format (and I already installed the .mdx integration). When I try to render a .md file, everything is fine, but when I try to render a .mdx file, I have this error :

Component.render is not a function

This component likely uses $(formatList(probableRendererNames))

Link to reproduction : https://stackblitz.com/edit/github-ggyvxo?file=src/pages/articles/news/index.astro

[austere brook]

Can you create a minimal reproduction so we can hopefully find the issue in the code? This doesn't look familiar

You can start from here
https://stackblitz.com/github/withastro/astro/tree/latest/examples/blog?on=stackblitz

[novel saffron]

There you go (https://stackblitz.com/edit/github-ggyvxo?file=src/pages/articles/news/index.astro)

[austere brook]

Thanks I'll take a look!

[austere brook]

Looks like it was the # {title} causing it.
The correct syntax is {frontmatter.<frontmatter_key>}, so # {frontmatter.title} here

Currently errors like this in mdx files are ignored
There's an open issue about that https://github.com/withastro/astro/issues/6226