Visual Studio has markdown editor with preview too, now also mermaid.

Not sure. @velersoftware.bsky.social might know.

well, yes. It defaults to Windows display language. Please report it using "Help/Send feedback/Report a problem" if it's not what you expected.

Ah, known issue, should be fixed starting from 18.0.0 Insiders 6 developercommunity.visualstudio.com/t/No-pending...

Looks like a bug actually, I'm not getting such spelling error. Or make sure VS uses English for spell checking (I think by default it's Windows language): learn.microsoft.com/en-us/visual...

Is that an exception info bar :)

well yeah 🥉 But also this is 20 years old Win32 UI... VS 2026 brings completely new fully redesigned settings experience, try it out.