GNOME: supend on laptop lid close no longer works since 19.10 upgrade

I’m quite positive that this used to work flawlessly in 19.04 (and past releases) but no longer does after a release-upgrade to 19.10 (kernel 5.3.0-24, ThinkPad X1 Carbon gen 5 in case this matters). I have the corresponding switch set in GNOME-Tweaks and have also attempted to manually edit /etc/systemd/logind.conf as suggested here, namely uncomment…

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