To be clear, this is the horrible "new" Notepad "app" that I absolutely hated and instantly removed when it was forced upon everyone. I doubt the old "edit field in a wrapper" one which has been nearly the same since Win95 has this problem.

(My newest machine is now running Linux.)

Markdown support and the like are useful but their need to cram AI and account sign-in into it definitely seemed over the top. When they got rid of Wordpad I kind of anticipated them trying to pivot Notepad more in that direction.

For what it matters, Windows Server 2025 still has the edit field in a wrapper.

They all still do, just like the old Explorer context menu. It's what you get when you remove the new abomination.

Is that old still provided?

Yes, it’s still under C:\Windows\notepad.exe, probably for backwards compatibility.