Korean Language Pack not applied in Cursor 3.12 Glass mode; --classic ignored (Windows)

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Hey, thanks for the detailed report. Your setup is actually correct, the issue is something else.

In Cursor 3.12, the Agents Window Glass opens by default, and that UI isn’t localized yet. Its labels like File, Edit, View are hardcoded in English, so no language pack will translate them. This is expected right now, not a broken install. The same issue is discussed here: The title bar area of cursor IDE cannot display Chinese

A couple notes about the flags:

  • --classic is a dev-only flag. It only affects the first window and doesn’t persist after a normal restart. That’s why you saw mixed behavior.
  • The "classic": true key in argv.json isn’t supported, so it gets ignored. Only "locale" works.

What you can do now is open the classic Editor or IDE window where the Korean Language Pack applies at least partially:

  • Cursor Settings > Agents > turn off Open Agents Window on Startup, or
  • Ctrl+Shift+N or the Open Editor Window command. In newer builds it might be called Open IDE, or
  • Right click the repo > Open in IDE.

Just to set expectations, even in the classic window only the base VS Code UI will be translated like menus and the command palette. Cursor-specific strings like Cursor Settings and the chat panel will stay in English because Microsoft language packs only include translations for upstream VS Code.

Full localization of Glass isn’t available yet, and I can’t share an exact timeline. I’ll pass along that there are already requests for multiple languages. Let me know if the Editor window workaround helped.