I've updated Arch Linux to Plasma 6.3 , however only after rebooting the greeter popped up.
Are you saying that you updated the system to Plasma 6.3 using `pacman` or Discover, and then only after rebooted did the Welcome Center app launch telling you that you upgraded to Plasma 6.3?
(In reply to Nate Graham from comment #1) > Are you saying that you updated the system to Plasma 6.3 using `pacman` or > Discover, and then only after rebooted did the Welcome Center app launch > telling you that you upgraded to Plasma 6.3? Yes... Well, not pacman, but technically the same thing: paru -Syu --noconfirm ; flatpak update -y
In that case this is expected. You're always supposed to reboot after applying updates. Always! Otherwise your system is in an inconsistent state, and you haven't in fact fully performed the upgrade, since everything running (Plasma, kded, ksmserver, etc) is still running from the old code, not the 6.3 code). As such, this is expected. Please get into the habit of always rebooting after performing system upgrades. It will probably give you a smoother, more stable experience overall.