LiFE Exam

[Thomas Weissel]

dear developers.
the project "life-exam" https://life-edu.eu/exam.html strongly relies on
the features and capabilities of plasmashell.
the kiosk system is at the heart of the project and the sheer number of
configuration options this shell provides makes all of this possible in the
first place.
so at first, i want to say thank you!

sometimes i run into a bug and because you have helped me iron out many of
those bugs before i'm trying again - cause this time this bug is a
showstopper.
(it happens not just at first boot but when students switch into the exam
environment too)

https://bugs.kde.org/show_bug.cgi?id=423421

for no reason plasmashell randomly RECONFIGURES a perfectly fine setup. but
not the entire setup - it switches from "desktopcontainment" to "folder"
and all widgets and the wallpaper are lost..
usually those widgets are preserved (at least on a manual switch) .. it
does not create a new activity.. the "default" activity - even the activity
icon is still the "original"

it deletes the whole containment section [Containments][22]
from plasma-org.kde.plasma.desktop-appletsrc  and creates a new
section [Containments][52]

the original plasma-org.kde.plasma.desktop-appletsrc is read from inside
the filesystem.squashfs file..
i also tried mounting the squashfs and had a look at the original in
there...  everything was as it should be

this seems to happen on a live usb flash drive only..  (or when booting the
iso file in virtualbox)
it is very easy to reproduce and it makes no sense to me at all.

so i hope you can shed some light on this and help me figure out what's
wrong here

cheers
thomas weissel
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