We also have a similar situation on our website: Linguria.com We have to refresh the page after uploading an image to timeline. And, if we upload multiple images it may take 4 - 5 minutes to process all images.
Yeah anywhere you get the fields to upload the images. Everything else is fine. Before I moved over from Cpanel never had this issue. So I am sure it is something that is missing or not being read right. Still cant figure it out through my troubleshooting so hope someone can help us.