[galaxy-dev] Bug? Uploaded files not adding to history (Nginx upload)

Hi everybody, I have recently updated our lab Galaxy instance to the latest stable latest_2015.01.13. I have now a problem with uploaded files: they are not added to history. The problem disappears if I disable the nginx upload feature (that worked just fine until the update). Maybe it is of help to know that the files are correctly uploaded to the "nginx_upload_store" directory configured in galaxy.ini but then they are not added to the current history. Best, Federico Z.