Created attachment 155780 [details]
New crash information added by DrKonqi

DrKonqi auto-attaching complete backtrace.

#6  0x00007f5c1e1ae366 in QQmlData::wasDeleted(QObject const*) (object=0x5561f404c4a0) at ../../include/QtQml/5.15.8/QtQml/private/../../../../../src/qml/qml/qqmldata_p.h:338
#7  QV4::QObjectWrapper::setQmlProperty(QV4::ExecutionEngine*, QQmlContextData*, QObject*, QV4::String*, QV4::QObjectWrapper::RevisionMode, QV4::Value const&) (engine=engine@entry=0x5561ed747940, qmlContext=qmlContext@entry=0x5561f3f98430, object=0x5561f404c4a0, name=0x7f5bf83c05b0, revisionMode=revisionMode@entry=QV4::QObjectWrapper::CheckRevision, value=...) at jsruntime/qv4qobjectwrapper.cpp:421
#8  0x00007f5c1e18335a in QV4::QQmlContextWrapper::virtualPut(QV4::Managed*, QV4::PropertyKey, QV4::Value const&, QV4::Value*) (m=<optimized out>, id=..., value=..., receiver=<optimized out>) at jsruntime/qv4qmlcontext.cpp:431
#9  0x00007f5c1e133b93 in QV4::Object::put(QV4::StringOrSymbol*, QV4::Value const&, QV4::Value*) (receiver=0x7f5bf83c05a0, v=..., name=0x7f5bf83c0598, this=0x7f5bf83c05a0) at ../../include/QtQml/5.15.8/QtQml/private/../../../../../src/qml/jsruntime/qv4string_p.h:280
#10 QV4::ExecutionContext::setProperty(QV4::String*, QV4::Value const&) (this=<optimized out>, name=0x7f5bf83c0598, value=...) at jsruntime/qv4context.cpp:313
#11 0x00007f5c1e1d916b in QV4::Runtime::StoreNameSloppy::call(QV4::ExecutionEngine*, int, QV4::Value const&) (engine=0x5561ed747940, nameIndex=<optimized out>, value=...) at jsruntime/qv4runtime.cpp:990
#12 0x00007f5c1e1c7608 in QV4::Moth::VME::interpret(QV4::CppStackFrame*, QV4::ExecutionEngine*, char const*) (frame=0x7ffc82285f10, engine=0x5561ed747940, code=0x7f5baa4edf8b "/\374") at jsruntime/qv4vme_moth.cpp:602
#13 0x00007f5c1e1ccb9f in QV4::Moth::VME::exec(QV4::CppStackFrame*, QV4::ExecutionEngine*) (frame=frame@entry=0x7ffc82285f10, engine=engine@entry=0x5561ed747940) at jsruntime/qv4vme_moth.cpp:466
#14 0x00007f5c1e15f8a8 in QV4::ArrowFunction::virtualCall(QV4::FunctionObject const*, QV4::Value const*, QV4::Value const*, int) (fo=<optimized out>, thisObject=<optimized out>, argv=<optimized out>, argc=<optimized out>) at jsruntime/qv4functionobject.cpp:528
#15 0x00007f5c1e1b140b in QV4::FunctionObject::call(QV4::Value const*, QV4::Value const*, int) const (argc=1, argv=0x7f5bf83c04d8, thisObject=0x7f5bf83c04d0, this=0x7f5bf83c04c8) at ../../include/QtQml/5.15.8/QtQml/private/../../../../../src/qml/jsruntime/qv4functionobject_p.h:202
#16 QV4::FunctionObject::call(QV4::JSCallData const&) const (data=<synthetic pointer>..., this=0x7f5bf83c04c8) at ../../include/QtQml/5.15.8/QtQml/private/../../../../../src/qml/jsruntime/qv4jscall_p.h:112
#17 QV4::QObjectSlotDispatcher::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) (which=<optimized out>, this_=<optimized out>, r=<optimized out>, metaArgs=0x7ffc82286180, ret=<optimized out>) at jsruntime/qv4qobjectwrapper.cpp:937
#18 0x00007f5c1ccf40d4 in QtPrivate::QSlotObjectBase::call(QObject*, void**) (a=0x7ffc82286180, r=0x5561f3eaa070, this=0x5561f7536c70) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#19 doActivate<false>(QObject*, int, void**) (sender=0x5561f3eaa070, signal_index=3, argv=0x7ffc82286180) at kernel/qobject.cpp:3923
#20 0x00007f5baa4592d3 in BluezQt::PendingCall::finished(BluezQt::PendingCall*) () at /lib/x86_64-linux-gnu/libKF5BluezQt.so.6
#21 0x00007f5baa49457d in  () at /lib/x86_64-linux-gnu/libKF5BluezQt.so.6
#22 0x00007f5c1ccf40d4 in QtPrivate::QSlotObjectBase::call(QObject*, void**) (a=0x7ffc82286370, r=0x5561f2ca1420, this=0x5561f1740830) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#23 doActivate<false>(QObject*, int, void**) (sender=0x5561f5c6d2c0, signal_index=3, argv=0x7ffc82286370) at kernel/qobject.cpp:3923
#24 0x00007f5c1d7de9d3 in QDBusPendingCallWatcher::finished(QDBusPendingCallWatcher*) () at /lib/x86_64-linux-gnu/libQt5DBus.so.5
#25 0x00007f5c1cce9ade in QObject::event(QEvent*) (this=0x5561f5c6d2c0, e=0x5561f5f67b90) at kernel/qobject.cpp:1347
#26 0x00007f5c1d96c793 in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=<optimized out>, receiver=0x5561f5c6d2c0, e=0x5561f5f67b90) at kernel/qapplication.cpp:3640
#27 0x00007f5c1ccbc07a in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x5561f5c6d2c0, event=0x5561f5f67b90) at kernel/qcoreapplication.cpp:1064
#28 0x00007f5c1ccbf167 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (receiver=0x0, event_type=0, data=0x5561ed009ec0) at kernel/qcoreapplication.cpp:1821
#29 0x00007f5c1cd16487 in postEventSourceDispatch(GSource*, GSourceFunc, gpointer) (s=0x5561ed1dd610) at kernel/qeventdispatcher_glib.cpp:277
#30 0x00007f5c1ae51d3b in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007f5c1aea66c8 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007f5c1ae4f3e3 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007f5c1cd15b4e in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x5561ed1e24f0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#34 0x00007f5c1ccba99b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffc82286760, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:69
#35 0x00007f5c1ccc2f34 in QCoreApplication::exec() () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#36 0x00005561ecb597f4 in  ()
#37 0x00007f5c1c229d90 in __libc_start_call_main (main=main@entry=0x5561ecb588e0, argc=argc@entry=1, argv=argv@entry=0x7ffc82286a38) at ../sysdeps/nptl/libc_start_call_main.h:58
#38 0x00007f5c1c229e40 in __libc_start_main_impl (main=0x5561ecb588e0, argc=1, argv=0x7ffc82286a38, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc82286a28) at ../csu/libc-start.c:392
#39 0x00005561ecb59915 in  ()

https://codereview.qt-project.org/c/qt/qtdeclarative/+/536727 wonder if this helps