Running as root:

[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
Core was generated by `/usr/bin/plasmashell --no-respawn'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x0000764516d967d7 in QQuickItemPrivate::itemToParentTransform(QTransform*) const ()
   from /usr/lib/libQt6Quick.so.6
[Current thread is 1 (Thread 0x76450eecda40 (LWP 1504))]

Running as user:

[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
Core was generated by `/usr/bin/plasmashell --no-respawn'.
Program terminated with signal SIGSEGV, Segmentation fault.
Downloading 315.38 K source file /usr/src/debug/qt6-declarative/qtdeclarative/src/quick/items/qquickitem.cpp
#0  0x0000764516d967d7 in QQuickItemPrivate::itemToParentTransform (this=0x645787d89a60, t=0x7ffeecb12060) at /usr/src/debug/qt6-declarative/qtdeclarative/src/quick/items/qquickitem.cpp:3199
3199	       t->translate(x, y);
[Current thread is 1 (Thread 0x76450eecda40 (LWP 1504))]