I’ve found the small problem at the origin of this behavior on my system.
I’m no using the gui domain.
Nevertheless, when starting the qubes manager (qubes-qube-manager) from the “Qubes Domains” icon, the qubes manager is not part of the session. It does not even appear in the current session on “Q” → “System Tools” → “Session and StartUp” → “Current Session”.
Now, when the qubes manager (qubes-qube-manager) is started from “Q” → “Qubes Tools” → “Qubes Manager”, it appears in the current session and is saved and restarted on login.
Can anyone replicate this?