EDIT: This happened when rebooting after performing some pamac updates (I hadn’t updated form a couple weeks).
EDIT 2: Playing around with plasmashell I got to see my wallpaper blink for a second and some errors, see this pastebin. Can confirm that kquitapp5 plasmashell returns "Application plasmashell could not be found using service org.kde.plasmashell and path /MainApplication." and then kstart5 plasmashell produces the same output as in the pastebin.
EDIT 3: This might have something to do with me previously using this workaround for my widgets and messing up with ~/.config/plasma-org.kde.plasma.desktop-appletsrc. I have disabled the script and rebooyted, and I have also tried deleting the file but the issue persists.
Thanks! It was indeed due to the Event Calendar widget. Everything’s back on its right place now. I will definitely try to use the v.69 from AUR as I really liked the widget.
EDIT: Version 69 from AUR works perfectly!
EDIT 2: Well, not perfectly. For some reason I’m not able wo make the key binding work. It becomes “None” again after saving changes.
Thank you, I had the same issue and this was just the solution I was looking for. I’ll give a try to the v.69, I hope it has the same functionality because I use it a lot.