oauth2/token endpoint not returning refresh_token

[Cross-linking for reference: https://stackoverflow.com/questions/73155941/dropbox-oauth2-token-endpoint-not-returning-refresh-token ]

I just checked and this is working for me:

# https://www.dropbox.com/oauth2/authorize?response_type=code&client_id=u1v<redacted>&token_access_type=offline

# resulted in:

# Access Code Generated
# Enter this code into <redacted> to finish the process
# Zu9U1<redacted>

 curl -X POST https://www.dropbox.com/oauth2/token \
	-d code=Zu9U1<redacted> \
	-d grant_type=authorization_code \
	-d client_id=u1v<redacted> \
	-d client_secret=<redacted>

{"access_token": "sl.BMQ<redacted>", "token_type": "bearer", "expires_in": 14400, "refresh_token": "_Ql10<redacted>", "scope": "account_info.read file_requests.read files.content.read files.content.write files.metadata.read files.metadata.write sharing.read sharing.write", "uid": "225<redacted>", "account_id": "dbid:AAB<redacted>"}

The JSON result from /oauth2/token contains a "refresh_token" field with the refresh token string. How are you checking the returned payload for the refresh token?

If this isn't working for you, please show the actual /oauth2/authorize authorization and /oauth2/token request and response (just redacting private values).