Example Page: https://twitter.com/MolsonCATest/with_replies
https://twitter.com/MolsonCATest/status/711918516933414912 was made via the Twitter API.
https://twitter.com/MolsonCATest/status/710865449731428352 was made natively.
Note that on the with_replies timeline the top one made via the API does not have a ‘In Reply to’ header while the one made natively does.
As far as we can tell this is a valid reply so it should be following this header. Any help would be appreciated!