Christian submitted https://github.com/systemd/systemd/pull/18559 which got turned into https://github.com/systemd/systemd/pull/18684 and has now been merged in upstream systemd.
We've both tested the resulting systemd and can confirm that /run/udev is now properly populated. Please cherry-pick those udevd fixes into Ubuntu's systemd.
Christian submitted https:/ /github. com/systemd/ systemd/ pull/18559 which got turned into https:/ /github. com/systemd/ systemd/ pull/18684 and has now been merged in upstream systemd.
We've both tested the resulting systemd and can confirm that /run/udev is now properly populated.
Please cherry-pick those udevd fixes into Ubuntu's systemd.