Comment # 10 on bug 1021969 from Tony Mechelynck

I notice that there are two systemd processes running on my system: one of them
has PID 1, and the other has PPID 1 (and of course a different PID). To restart
them both, experiment shows that both these commands are needed:

    systemctl daemon-reexec
    systemctl --user daemon-reexec

Maybe the upgrade procedure does the former but not the latter?

Also, the change from WONTFIX to FIXED, which the bug history says I made, was
not intentional. Either inattention, or some Bugzilla quirk.