Hi, I'm using Kubuntu 20.04 with all the updates and this morning all widgets (notes) have disappeared. I have restored them from "~/.local/share/plasma_notes/", creating new ones and copying the text from files there.

Now their position and settings are not being remembered after reboot.
What could have crashed in the first place and why doesn't plasma remember the new settings?

Now all of the notes disappeared again...
Anyone knows how to debug?

Did you set the session to be saved on log-out?
System Settings -> Workspace -> Startup and Shutdown -> Destkop Session

Yes, it's saved and all of the programs are starting again after reboot.
BTW, now Anydesk has forgotten all of it's settings and history. Something is happening ...

I don't think we can influence settings on non-KDE applications...

What did you change before this started to happen? I can't reproduce any of that on Kubuntu 21.10 (backports enabled)

Absolutely nothing. Only regular updates. I'm on Kubuntu 20.04. No errors in syslog, too.
I'm sure it's not a setting. Notes didn't remember their positions and sizes. After some reboots, they all disappeared again.

toshko4 wrote:...
I'm sure it's not a setting. Notes didn't remember their positions and sizes. After some reboots, they all disappeared again.

I was referring to Anydesk you mentioned above, which we have no influence over. I started adding Notes to my desktop to see how it behaves, so far no changes and no lost information.
I somehow fail to see how widgets can disappear from the desktop without any changes in the configuration files, but if this is a consistent and repeatable behaviour on your system you should file a bug on https://bugs.kde.org. Please give a link to the bug report here.

The desktop wallpaper also changed to a default one.

toshko4 wrote:The desktop wallpaper also changed to a default one.

Which points to the configuration not being saved or the configuration files having been deleted or altered. Could this be a permission issue in your home folder?

I'm not sure which folder should have which permissions exactly.

Are you switching between Wayland and X?
I think that happens when I do, but I have been too lazy to exactly reproduce it for a bug report.

No, I'm not switching, I use only the default X.