I have a field on a template using the "Attachment" type. There's only 1 attachment field on the template and it's named "Blob" (I read that these were requirements of that field type). The upload worked great in 8.1. We recently upgraded to 8.2. Now when I click "Attach" it lets me select a file and it appears to upload but then I get a prompt to "Save" the file. It renames the file to the name of the Sitcore item but it is the file I just uploaded and nothing has been uploaded to the field.
This has been attempted in Chrome, Edge, FF and IE11 in multiple environments with the same result.