I was searching for a particular bug and found https://discuss.linuxcontainers.org/t/lxd-unix-socket-i-o-timeout/13188, which links to https://github.com/lxc/lxd/issues/10034. The latter doesn’t exist any more, but feeding its title into a search engine I found https://github.com/canonical/lxd/issues/10034.
Was that foreseen during the migration? Is there anything to be done about that?