

Basically. systemd-run
was already able to do it, all that really changed is the interface for it. The change to run.c
in the patch itself was <400LOC, and the entire patch was <1.4k lines with most being docs, tests and utils for coloring the terminal.
The case is: You switched to it before it was “old-old-stable” and haven’t updated.
Causes for this are likely: