
Edit: Looked little deeper and the issue stems from only one of the torrents getting uploaded to server, after cgi.parse_multipart was removed from twisted.web.http and replaced with email.message_from_bytes, in there commit 4579398. This was then also what makes it a web-UI only issue, as is the only UI uploading to server firstly(through a twisted web resource), before adding torrents(with bencoded payload).