I've been using KTorrent with Humble Bundle for a long time. Recently (I'd say within the last 2-4 months) it no longer works with Humble Bundle torrents. It will load in the torrent, but it never starts downloading. When I go to the Tracker tab, it has an error saying it's an unregistered tracker.
do other bittorrent clients work? can you also try with ktorrent for kde5?
Thank you for the bug report. As this report hasn't seen any changes in 5 years or more, we ask if you can please confirm that the issue still persists. If this bug is no longer persisting or relevant please change the status to resolved.