The answer I got is that this may be a bug, ubuntu-release-upgrader should deactivate your apt-pinning. Can you see if the logs of the upgrade are still in /var/log/dist-upgrade and upload all the files there to this bug report?
The answer I got is that this may be a bug, ubuntu- release- upgrader should deactivate your apt-pinning. Can you see if the logs of the upgrade are still in /var/log/ dist-upgrade and upload all the files there to this bug report?