[Bug 2090941] [NEW] "systemctl edit apt-daily.timer" creates a file which is ignored by systemd timer

[JHR]

Public bug reported:

On Ubuntu 24.04 LTS changing the apt-daily.timer with "systemctl edit
apt-daily.timer" succesfully creates a file which is unfortunately
ignored by systemd even after doing "systemctl daemon-reload" and
"systemctl restart apt-daily.timer".

To reproduce it try to change the timer of apt-daily.timer by calling
"systemctl edit apt-daily.timer".

Add the following lines:

[Timer]
OnCalendar=*-*-* 5:00

Save and exit.

Reload by calling:

systemctl daemon-reload
systemctl restart apt-daily.timer

Now you can verify that the timer is not changed accordingly by calling:

systemctl list-timers --all

** Affects: systemd (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/2090941

Title:
  "systemctl edit apt-daily.timer" creates a file which is ignored by
  systemd timer

Status in systemd package in Ubuntu:
  New

Bug description:
  On Ubuntu 24.04 LTS changing the apt-daily.timer with "systemctl edit
  apt-daily.timer" succesfully creates a file which is unfortunately
  ignored by systemd even after doing "systemctl daemon-reload" and
  "systemctl restart apt-daily.timer".

  To reproduce it try to change the timer of apt-daily.timer by calling
  "systemctl edit apt-daily.timer".

  Add the following lines:

  [Timer]
  OnCalendar=*-*-* 5:00

  Save and exit.

  Reload by calling:

  systemctl daemon-reload
  systemctl restart apt-daily.timer

  Now you can verify that the timer is not changed accordingly by
  calling:

  systemctl list-timers --all

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