I tried to post a question on Meta Stack Overflow in Português, but the iOS app didn't let me submit it because it thought the question missed one of the required tags, as you can see here:
My post did have not just one, but two of those tags. But our tags are localized and the app didn't check the tag synonyms. On our site, "debate" is the main tag for "discussion" (which is a synonym). All our required meta tags have the original English version tag as synonyms, so maybe the app could just also check for the synonyms when validating the post.