I’ve been editing a project which uses Portuguese instrument names, setup as such in Engraving Options. Now, I started a new project using the Concert Orchestra template, which default to English. Every instrument is in English, except the 2 first flutes, which are called “Flauta”, as in Portuguese. This happened to me before.
In every subsequent project, now “Flute” is “Flauta”. The only way to revert this seems to be to change to another language and back to English, while resetting names.