Plasma 5.25 session restore does not remember which windows were on which virtual desktop

After upgrading to Tumbleweed 20220616 with KDE Plasma 5.25, if you find all your virtual desktop windows restored onto your first virtual desktop, it’s probably this bug:

A work around is to disable Plasma’s use of systemd boot. When logged into the problem session, run the following command:

kwriteconfig5 --file startkderc --group General --key systemdBoot false

After that, future logins should revert to the correct behaviour.