New comment by ProjectMoon on void-packages repository

https://github.com/void-linux/void-packages/issues/21766#issuecomment-626325440

Comment:
There have been similar reported issues with other login managers. See https://www.reddit.com/r/voidlinux/comments/f2vsjr/switching_to_kde_broke_discord_tray_notification/ for lightdm. There's something funny with KDE on X and dbus. But where the problem "truly lies," I am not sure.

Could be:
* Bug in upstream KDE
* Bug in upstream SDDM (and lightdm apparently)
* Bug somewhere in Void's configuration of these packages.

The only thing I know is that adding `dbus-run-session` fixes it for me.