> Thanks Vitaly. We will look into converting it to systemd-user
unit.
> I believe that would work for all other desktop managers as well.
Yeah, you might want to ship both a systemd unit and an XDG autostart
file for the time being. There will still be graphical desktops
environments which are not started using systemd in the foreseeable
future.
Hopefully fixed upstream in Plasma 5.22:
https://bugs.kde.org/show_bug.cgi?id=433987