Whow! I wish there had been a warning in the pop-up window before updating: "P. S. Beware! No app preferences available. You'll be discriminated if you are using any other language than plain EN, code incl."
For now I switched to the browser version. That's at least a little better. So if you're struggling with the red squiggly underlines try logging into Evernote in the browser and see if that helps.