Markdown files are now saved with a `.litcoffee` extension instead of `.md`

[StephanTLavavej]

Does this issue occur when all extensions are disabled?: Yes

• VS Code Version: 1.111.0
• OS Version: Win11 25H2

Steps to Reproduce:

1. New Text File (Ctrl + N).
2. Type anything.
3. Change Language Mode (Ctrl + K, M) to Markdown.
4. Save (Ctrl + S).

VSCode suggests the .litcoffee extension, e.g. Untitled-1.litcoffee, apparently because it's been added to the beginning of the list of Markdown extensions (*.litcoffee;*.md;*.mkd; etc.). This is highly undesirable for such an obscure extension. .md should remain the initial suggested extension, as it was in previous versions of VSCode.

[AbdurRKhalid]

I am interested in looking into this issue. Please assign this issue to me. 🙏🏼

[marksowell]

I’m seeing this on macOS as well.

Does this issue occur when all extensions are disabled?: Yes

• VS Code Version: 1.111.0 (Universal)
• OS Version: macOS 26.3 (25D125)

This looks related to PR #299299, which resubmitted #295182 and added .litcoffee to the built-in Markdown extensions list in 1.111.0.