https://bugs.kde.org/show_bug.cgi?id=455439

            Bug ID: 455439
           Summary: Kwin crashing reset almost all KDE related ettings.
                    Can safety be improved or investigate why this
                    happened?
           Product: kwin
           Version: 5.24.5
          Platform: Archlinux Packages
                OS: Linux
            Status: REPORTED
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: [email protected]
          Reporter: [email protected]
  Target Milestone: ---

SUMMARY
I am not sure how useless this bug ticket would be but creating it so there is
at least a log. Maybe someone can play around with trying to reproduce if they
have time or want to have fun.

Basically what happened was I was using my laptop as usual, played some games.
Did an Arch update (sudo pacman -Syu) then turned off my laptop and went
outside. When I came home and powered on my laptop almost all of my KDE
settings were gone/reset to default. My Dolphin was like I had never touched it
before, as was Plasma. All of my icon only desktop pins were gone except the 4
default. And my widgets were gone. Wallpaper was back to the default one.

I had made a post on Reddit and another user mentioned they had a similar
encounter with xwayland crashing.

https://old.reddit.com/r/kde/comments/vd6g6h/arch_did_an_update_and_all_only_my_kde_related/

STEPS TO REPRODUCE
1. Make changes to settings like wallpaper, Dolphin, icon only task manager
placement, add icons, widgets
2. Force kwin or xwayland to crash
3. upon getting logged back in or rebooting your settings may be reset to
default/deleted.

OBSERVED RESULT
Almost all KDE related settings were deleted/reset to default. Some remained
like my saved wi-fi and having widgets downloaded. But the actual settings for
those were all reset/deleted. Dolphin was like if it was new, Plasma was like
if it was new. Wallpaper was default.

EXPECTED RESULT
This bug ticket is more so to investigate why crashing of kwin, xwayland or
anything else can nuke KDE settings. How are they related? Could something have
been writing to the settings during the crash? But then why would almost all
KDE settings reset even if they are completely unrelated? Perhaps further
safety could be put into place where a duplicate of the setting is made and
only deleted if the original setting saved? I imagine this would work upon a
reboot or something it would check if the current setting is not corrupt and
delete the back up. Or replace the corrupt on with the back up.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch
(available in About System)
KDE Plasma Version: 5.24.5
KDE Frameworks Version: 5.95.0
Qt Version: 5.14.5

ADDITIONAL INFORMATION
Please move this to another category if it would suite better, however for me
it was kwin that crashed when everything reset. Another user had reported it
happened to them in xwayland.

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