All Widgets and Wallpaper changed suddenly

[vilmil]

After update and rebooting all of my widgets, including Notes which contained important content is removed. Also the wallpaper is changed which is strange really!
I read the Stable Update forum but there wasn’t any such warning or bug.

I know it’s very unlikely to recover my Notes But I just want to know why this problem happened and how can I prevent it? Can anyone guide me?

I updated my system yesterday by:

$ sudo pacman -Syu

And last night shut down system using:

$ sudo shutdown -h now

And today I logged in normally but faced with this strange situation.

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I use Manjaro(KDE) with below information:

$ uname -a 
Linux milad-pc 5.4.169-1-MANJARO #1 SMP PREEMPT Wed Dec 29 18:08:59 UTC 2021 x86_64 GNU/Linux

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EDIT
The recent logs of pacman from /var/log/pacman.log:

$ tail -19 /var/log/pacman.log
[2022-01-03T08:35:43+0330] [PACMAN] Running 'pacman -Sc'
[2022-01-04T17:03:57+0330] [PACMAN] Running 'pacman -S pambase'
[2022-01-09T08:06:25+0330] [PACMAN] Running 'pacman -Syu'
[2022-01-09T08:06:25+0330] [PACMAN] synchronizing package lists
[2022-01-09T08:06:34+0330] [PACMAN] starting full system upgrade
[2022-01-09T08:06:41+0330] [ALPM] transaction started
[2022-01-09T08:06:41+0330] [ALPM] upgraded bmenu (0.17-3 -> 0.18-1)
[2022-01-09T08:06:43+0330] [ALPM] transaction completed
[2022-01-09T08:06:43+0330] [ALPM] running '30-systemd-update.hook'...
[2022-01-09T08:06:43+0330] [ALPM] running 'update-desktop-database.hook'...
[2022-01-11T08:08:08+0330] [PACMAN] Running 'pacman -Syu'
[2022-01-11T08:08:08+0330] [PACMAN] synchronizing package lists
[2022-01-11T08:08:19+0330] [PACMAN] starting full system upgrade
[2022-01-11T08:08:43+0330] [ALPM] transaction started
[2022-01-11T08:08:44+0330] [ALPM] upgraded archlinux-appstream-data (20211210-1 -> 20220107-1)
[2022-01-11T08:08:44+0330] [ALPM] transaction completed
[2022-01-11T08:08:45+0330] [ALPM] running '30-systemd-update.hook'...
[2022-01-11T08:08:45+0330] [ALPM] running '90-update-appstream-cache.hook'...
[2022-01-11T08:08:48+0330] [ALPM-SCRIPTLET] ✔ Metadata cache was updated successfully.

NOTE: I shut down the system every night, so the problem is related to update at 2022-01-11.

[Thenujan]

Could possibly be this bug.

https://bugs.kde.org/show_bug.cgi?id=427861

Workaround is to keep a copy of ~/.config/plasma-org.kde.plasma.desktop-appletsrc and then restore it once the issue occurs but not sure if notes can also be recovered

[vilmil]

Wow, Yes! It’s exactly this bug (Even the random chosen wallpaper after problem is the same too )
I’m happy at least I’m not the only one who has this bug .

I read the link, some people says restoring plasma-org.kde.plasma.desktop-appletsrc restores all the lost information even Widgets (including Note) and some other says there is no effect. It seems I should give it a shot.

I’ll use your suggested workaround but I hope they fix it as soon as possible .
Thank you