(In reply to valerijs.gusjkovs from comment #0)
> Application: plasmashell (6.1.5)
> 
> Qt Version: 6.7.3
> Frameworks Version: 6.6.0
> Operating System: Linux 6.11.0-5-cachyos x86_64
> Windowing System: Wayland
> Distribution: "Arch Linux"
> DrKonqi: 6.1.5 [KCrashBackend]
> 
> -- Information about the crash:
> Crash on start of plasmashell.
> Grouping plasmoid needs to be added to cause crash.
> Grouping plasmoid has to have one child added to cause crash.
> 
> The crash can be reproduced every time.
> 
> -- Backtrace:
> Application: plasmashell (plasmashell), signal: Segmentation fault
> Content of s_kcrashErrorMessage: std::unique_ptr<char []> = {get() =
> <optimized out>}
> [KCrash Handler]
> #4  QObjectCompatProperty<QQuickItemPrivate, double,
> &QQuickItemPrivate::_qt_property_y_offset, &QQuickItemPrivate::setY,
> &QQuickItemPrivate::yChanged, decltype(nullptr)>::value (this=<optimized
> out>) at
> /usr/src/debug/qt6-declarative/qtdeclarative/src/quick/items/qquicklistview.
> cpp:928
> #5  QObjectCompatProperty<QQuickItemPrivate, double,
> &QQuickItemPrivate::_qt_property_y_offset, &QQuickItemPrivate::setY,
> &QQuickItemPrivate::yChanged, decltype(nullptr)>::operator double
> (this=<optimized out>, this=<optimized out>) at
> /usr/include/qt6/QtCore/6.7.3/QtCore/private/qproperty_p.h:594
> #6  QQuickItem::y (this=<optimized out>) at
> /usr/src/debug/qt6-declarative/qtdeclarative/src/quick/items/qquickitem.cpp:
> 7157
> #7  QQuickListViewPrivate::repositionPackageItemAt (this=0x6235d6b6a490,
> item=0x6235d6f4eeb0, index=0) at
> /usr/src/debug/qt6-declarative/qtdeclarative/src/quick/items/qquicklistview.
> cpp:929
> #8  0x00007d4a9fa540ac in QQuickItemViewPrivate::updateUnrequestedPositions
> (this=0x6235d6b6a490) at
> /usr/src/debug/qt6-declarative/qtdeclarative/src/quick/items/qquickitemview.
> cpp:2575
> #9  0x00007d4a9fa5559d in QQuickItemViewPrivate::refill
> (this=0x6235d6b6a490, from=-0, to=436) at
> /usr/src/debug/qt6-declarative/qtdeclarative/src/quick/items/qquickitemview.
> cpp:1809
> #10 0x00007d4a9fa57e8b in QQuickItemViewPrivate::layout (this=<optimized
> out>) at
> /usr/src/debug/qt6-declarative/qtdeclarative/src/quick/items/qquickitemview.
> cpp:1919
> #11 0x00007d4a9f84954f in QQuickWindowPrivate::polishItems
> (this=0x6235d5f6c3b0) at
> /usr/src/debug/qt6-declarative/qtdeclarative/src/quick/items/qquickwindow.
> cpp:348
> #12 0x00007d4a9f8e4e44 in QSGGuiThreadRenderLoop::renderWindow
> (this=0x6235d6634800, window=0x6235d65fe600) at
> /usr/src/debug/qt6-declarative/qtdeclarative/src/quick/scenegraph/
> qsgrenderloop.cpp:616
> #13 0x00007d4a9e7e083c in QWindow::event (this=0x6235d65fe600,
> ev=0x7ffff60e2ae0) at
> /usr/src/debug/qt6-base/qtbase/src/gui/kernel/qwindow.cpp:2608
> #14 0x00007d4aa00fd9cc in QApplicationPrivate::notify_helper
> (this=<optimized out>, receiver=0x6235d65fe600, e=0x7ffff60e2ae0) at
> /usr/src/debug/qt6-base/qtbase/src/widgets/kernel/qapplication.cpp:3287
> #15 0x00007d4a9e145be8 in QCoreApplication::notifyInternal2
> (receiver=0x6235d65fe600, event=0x7ffff60e2ae0) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1152
> #16 0x00007d4a9e145c3d in QCoreApplication::sendSpontaneousEvent
> (receiver=<optimized out>, event=<optimized out>) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1607
> #17 0x00007d4a9e787574 in QGuiApplicationPrivate::processExposeEvent
> (e=0x6235d60913f0) at
> /usr/src/debug/qt6-base/qtbase/src/gui/kernel/qguiapplication.cpp:3362
> #18 0x00007d4a9e7e7d24 in QWindowSystemInterface::sendWindowSystemEvents
> (flags=...) at
> /usr/src/debug/qt6-base/qtbase/src/gui/kernel/qwindowsysteminterface.cpp:1114
> #19 0x00007d4a9ec05734 in userEventSourceDispatch (source=<optimized out>)
> at
> /usr/src/debug/qt6-base/qtbase/src/gui/platform/unix/qeventdispatcher_glib.
> cpp:38
> #20 0x00007d4a9cbeb559 in g_main_dispatch (context=0x7d4a8c000f20) at
> ../glib/glib/gmain.c:3357
> #21 0x00007d4a9cc4e157 in g_main_context_dispatch_unlocked
> (context=0x7d4a8c000f20) at ../glib/glib/gmain.c:4208
> #22 g_main_context_iterate_unlocked.isra.0
> (context=context@entry=0x7d4a8c000f20, block=block@entry=1,
> dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:4273
> #23 0x00007d4a9cbeaa55 in g_main_context_iteration (context=0x7d4a8c000f20,
> may_block=1) at ../glib/glib/gmain.c:4338
> #24 0x00007d4a9e3a985d in QEventDispatcherGlib::processEvents
> (this=0x6235d53a9510, flags=...) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:
> 394
> #25 0x00007d4a9e150106 in QEventLoop::processEvents (this=0x7ffff60e2e50,
> flags=...) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:100
> #26 QEventLoop::exec (this=0x7ffff60e2e50, flags=...) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:182
> #27 0x00007d4a9e14a27d in QCoreApplication::exec () at
> /usr/src/debug/qt6-base/qtbase/src/corelib/global/qflags.h:74
> #28 0x00007d4aa00f97aa in QApplication::exec () at
> /usr/src/debug/qt6-base/qtbase/src/widgets/kernel/qapplication.cpp:2555
> #29 0x00006235ac5ead86 in main (argc=<optimized out>, argv=<optimized out>)
> at /usr/src/debug/plasma-workspace/plasma-workspace-6.1.5/shell/main.cpp:188
> [Inferior 1 (process 56128) detached]
> 
> Reported using DrKonqi

Fixing the crash requires downgrades. This was what I downgraded to fix it for the momend

0: downgraded qt6-imageformats ["6.7.3-1", "6.7.2-1"]
1: downgraded qt6-5compat ["6.7.3-1", "6.7.2-1"]
2: downgraded qt6-sensors ["6.7.3-1", "6.7.2-1"]
3: downgraded qt6-tools ["6.7.3-1", "6.7.2-2"]
4: downgraded qt6-wayland ["6.7.3-1", "6.7.2-4"]
5: downgraded qt6-3d ["6.7.3-1", "6.7.2-1"]
6: downgraded qt6-charts ["6.7.3-1", "6.7.2-1"]
7: downgraded qt6-connectivity ["6.7.3-1", "6.7.2-1"]
8: downgraded qt6-networkauth ["6.7.3-1", "6.7.2-1"]
9: downgraded qt6-quick3d ["6.7.3-1", "6.7.2-1"]
10: downgraded qt6-shadertools ["6.7.3-1", "6.7.2-1"]
11: downgraded qt6-quicktimeline ["6.7.3-1", "6.7.2-1"]
12: downgraded qt6-serialport ["6.7.3-1", "6.7.2-1"]
13: downgraded qt6-speech ["6.7.3-1", "6.7.2-1"]
14: downgraded qt6-multimedia ["6.7.3-1", "6.7.2-1"]
15: downgraded qt6-multimedia-ffmpeg ["6.7.3-1", "6.7.2-1"]
16: downgraded qt6-multimedia-gstreamer ["6.7.3-1", "6.7.2-1"]
17: downgraded qt6-virtualkeyboard ["6.7.3-1", "6.7.2-1"]
18: downgraded qt6-svg ["6.7.3-1", "6.7.2-1"]
19: downgraded qt6-websockets ["6.7.3-1", "6.7.2-1"]
20: downgraded qt6-webview ["6.7.3-1", "6.7.2-1"]
21: downgraded qt6-webengine ["6.7.3-1", "6.7.2-3"]
22: downgraded qt6-webchannel ["6.7.3-1", "6.7.2-1"]
23: downgraded qt6-positioning ["6.7.3-1", "6.7.2-1"]
24: downgraded qt6-declarative ["6.7.3-2", "6.7.2-1"]
25: downgraded qt6-base ["6.7.3-1", "6.7.2-2"]
26: downgraded qt6-translations ["6.7.3-1", "6.7.2-1"]

*** This bug has been marked as a duplicate of bug 493854 ***