Redmine

No, I don't think so. This issue is just about a couple uninternationalized hard-coded strings in app/models/role.rb.
I'm not sure if they were left that way intentionally or otherwise. However I thought I'd better report it.

Do they appear in the application ?

Yes, they appear in admin UI in roles management page. The two roles are special roles added by Redmine. But the strings are not internationalized using I18n module so that translators can translate them into their language.
(I guess you wanted to make sure I know what I'm talking about. I hope my answer has helped.)