V3.3 has become more strict about input format checking (intentionally or otherwise) and users need to be more rigorous in allowing multipart when using it for file uploads.
Prior to v3.3, I suspect people should have been defining this, but it wasn't being checked, so many won't have done.
Not sure my "note" format is in the preferred document style - possibly we don't want to mention the version for example? Feel free to edit or request changes.
V3.3 has become more strict about input format checking (intentionally or otherwise) and users need to be more rigorous in allowing multipart when using it for file uploads.
Prior to v3.3, I suspect people should have been defining this, but it wasn't being checked, so many won't have done.
Not sure my "note" format is in the preferred document style - possibly we don't want to mention the version for example? Feel free to edit or request changes.