Hi, I am suffering the same issue with this question Image media uploaded but not shown in post update.
The media was uploaded successfully. It even worked well with twurl
twurl "/1.1/statuses/update.json" -d "media_ids=821013480547287040&status=Sample Tweet with media_ids and twurl"
But when I was trying to post it through API. My image was missing and the status had still been post successfully!!!
Does anyone know any clue???