It is not a “must”, but a comment in general ->“localization” could be useful: “* some strings will be updated after restarting Notepad++”.
If you agree, I can insert an issue.
It’s surely a limit but it’s not a bug to me. Users usually decide the language during installation. Even they switch later, the same language will stay for the next session. I won’t make the tips dynamically because it needs a lot of coding effort for nothing.