I keep running into a weird issue where my Debian servers won't shut down ("A start job is running for Unattended Upgrades") when I enable unattended upgrades a

I keep running into a weird issue where my Debian servers won't shut down ("A start job is running for Unattended Upgrades") when I enable unattended upgrades as described at [1]. It is especially weird since my Debian systems are otherwise pretty bare-bones, yet the issue occurs on several of them. The solutions listed on Stack Exchange [2] seem rather hacky. [1] https://wiki.debian.org/UnattendedUpgrades#automatic_call_via_.2Fetc.2Fapt.2Fapt.conf.d.2F20auto-upgrades https://wiki.debian.org/UnattendedUpgrades#automatic_call_vi... [2] http://unix.stackexchange.com/questions/293804/debian-a-start-job-is-running-for-unattended-upgrades http://unix.stackexchange.com/questions/293804/debian-a-star...