My Jira menues and features in English are translated only partially in Italian, resulting in a mix of funny English and Italian. When I work online with my international team, usually in English, and they see my screen, they get confused. Sometimes I also get confused myself with their screen, because the translation is not accurate. We will have soon some Japanese members on board.
I would like to standardize it all in English, not because it is better than other languages but because it is standard.