I have been using the attachment editor for a while now. Once i added a proxy to all my rest layers... the attachment editor still allows me to view and delete attachments, however on the downside I can not add attachments i keep getting an error stating:
is not a valid JSON primitive. This error can also occur when extraneous data is present after the JSON data.
If i remove the proxy it will allow the data to pass however the proxy is part of my security.