We are using the Dropbox api as part of our app. Now that we are migrating from v1 to v2, we noticed that any files with diacritics(Umlauts, Kanji, etc) do not upload correctly. If I just send the data, the umlauts are removed. Kanji causes a failure to parse the JSON.
Looking through some of the other issues like this, one of the suggestions was to use unicode codes for special characters. This is also how the API explorer does it, but that does not work because backslashes aren't allowed in that JSON.
This is really important functionality as our app supports international customers.