Just an update on this bug, as it is in Debian unstable. I noticed that the bug can't be reproduced on a GNOME/Wayland session. I can see in the logs that the PA GDM daemon gets killed with SIGTERM. I don't know enough about Wayland to tell you what happens there. I'm just surprised because I *think* I bumped into this bug at a time where I was running GNOME/Wayland, so I'm not sure if there was a change in Wayland, or if I'm mistaken.
In any case, for those running GNOME/X11, the bug is still there and can be reproduced. (choosing between Wayland/X11 is done by editing the file /etc/gdm3/daemon.conf) There's an effort to solve that upstream at https://gitlab.freedesktop.org/pulseaudio/pulseaudio/merge_requests/10, I just pushed an updated version of a patch. Thanks, Arnaud

