This is constantly happening to me as well. Good luck with getting an answer.

Does anyone at know how to get deluge back to being the default torrent downloader? I'm being blocked from sites by using uTorrent. UTorrent automatically changed itself back to default when it upgraded.

I have some sites that do not allow the use of uTorrent so I installed Deluge and had it set as default but also had uTorrent running to seed existing downloads. With the last uTorrent update it is now back to uTorrent being the default torrent but I want to change it back to Deluge as the default. ...