I often get the:
Onion site has disconnected
The most likely cause is that the onion site is offline. Contact the onion site administrator.
Even after restarting Tor with its control panel it often just doesn’t help. I need to constantly restart tor and refresh the page to get lucky.
I’m not sure if its related, but I don’t close the tor window for days usually. Never had any issue with it on regular linux
Unrelated to Qubes OS, so create a topic on the Tor Project Forum:
I never had such issues with tor with normal linux distros. This is directly related to the qubes with whonix.
I’ll try whonix forum if there;s no help here though
It might help if you made it clear whether this is restricted to one
site or all, or a number of sites.
I never presume to speak for the Qubes team.
When I comment in the Forum I speak for myself.