This sounds somewhat similar to what I'm experiencing (Privoxy works without checked torrents but stops when there are torrents). Unfortunately I'm completely new to Docker and not sure what/how to provide required details but this can't be good:
rtorrent does load after a while but Privoxy never does. Any help (or suggestions on what I can do to help you help me) is appreciated.
I'm running Docker on Windows, have checked my LAN is ok, I'm unsure about users PUID and GUID stuff on Windows so from what's said above it could well be permissions but I've no idea how to fix it.
Thanks in advance.
Love your work binhex - blows my mind how awesome your stuff is.