Crash in DynamicPropertiesProxyModel::rowCount

0   libQmlDesigner.dylib            0x10978d050         DynamicPropertiesProxyModel::rowCount (dynamicpropertiesproxymodel.cpp:82)
1   QtQmlModels                     0x1090f12f8         [inlined] VDMAbstractItemModelDataType::rowCount (qqmladaptormodel.cpp:414)
2   QtQmlModels                     0x1090f12f8         {virtual override thunk}
3   QtQmlModels                     0x1090edeac         QQmlAdaptorModel::rowCount (qqmladaptormodel.cpp:1011)
4   QtQmlModels                     0x1090f656c         [inlined] QQmlDelegateModelPrivate::adaptorModelCount (qqmldelegatemodel.cpp:189)
5   QtQmlModels                     0x1090f656c         QQmlDelegateModel::componentComplete (qqmldelegatemodel.cpp:310)
6   QtQuick                         0x10a265538         QQuickRepeater::componentComplete (qquickrepeater.cpp:309)
7   QtQml                           0x101c59b20         QQmlObjectCreator::finalize (qqmlobjectcreator.cpp:1432)
8   QtQml                           0x101becf50         QQmlComponentPrivate::complete (qqmlcomponent.cpp:1017)
9   QtQml                           0x101bebb8c         QQmlComponentPrivate::completeCreate (qqmlcomponent.cpp:1111)
10  QtQml                           0x101bece7c         QQmlComponent::create (qqmlcomponent.cpp:830)
11  QtQuickWidgets                  0x107ed228c         QQuickWidget::continueExecute (qquickwidget.cpp:1211)
12  libQmlDesigner.dylib            0x1097bf6c8         QmlDesigner::PropertyEditorView::setupQmlBackend (propertyeditorview.cpp:490)
13  libQmlDesigner.dylib            0x1097bebe8         QmlDesigner::PropertyEditorView::resetView (propertyeditorview.cpp:424)
14  libQmlDesigner.dylib            0x1097bea70         QmlDesigner::PropertyEditorView::setupPanes (propertyeditorview.cpp:387)
15  libQmlDesigner.dylib            0x1097c5a70         QtPrivate::QFunctorSlotObject<T>::impl (qobjectdefs_impl.h:408)
16  QtCore                          0x1027ef080         [inlined] QtPrivate::QSlotObjectBase::call (qobjectdefs_impl.h:363)
17  QtCore                          0x1027ef080         QSingleShotTimer::timerEvent (qtimer.cpp:322)
18  QtCore                          0x1027d4834         QObject::event
19  QtWidgets                       0x100647e4c         QApplicationPrivate::notify_helper (qapplication.cpp:3313)
20  QtWidgets                       0x100648eb4         QApplication::notify (qapplication.cpp:3264)
21  QtCore                          0x102792f8c         QCoreApplication::notifyInternal2 (qcoreapplication.cpp:1026)
22  QtCore                          0x1028f2d1c         QTimerInfoList::activateTimers (qtimerinfo_unix.cpp:610)
23  libqcocoa.dylib                 0x1014da44c         [inlined] QCocoaEventDispatcherPrivate::processTimers (qcocoaeventdispatcher.mm:95)
24  libqcocoa.dylib                 0x1014da44c         QCocoaEventDispatcherPrivate::activateTimersSourceCallback (qcocoaeventdispatcher.mm:89)
25  CoreFoundation                  0x1c316a99c         __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__
26  CoreFoundation                  0x1c316a8e8         __CFRunLoopDoSource0
27  CoreFoundation                  0x1c316a64c         __CFRunLoopDoSources0
28  CoreFoundation                  0x1c3168f68         __CFRunLoopRun
29  CoreFoundation                  0x1c316848c         CFRunLoopRunSpecific
30  HIToolbox                       0x1cbd88dd4         RunCurrentEventLoopInMode
31  HIToolbox                       0x1cbd88a60         ReceiveNextEventCommon
32  HIToolbox                       0x1cbd88904         _BlockUntilNextEventMatchingListInModeWithFilter
33  AppKit                          0x1c5cc7b28         _DPSNextEvent
34  AppKit                          0x1c5cc6420         -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:]
35  AppKit                          0x1c5cb85ec         -[NSApplication run]
36  libqcocoa.dylib                 0x1014dae38         QCocoaEventDispatcher::processEvents (qcocoaeventdispatcher.mm:394)
37  QtCore                          0x10279bff4         [inlined] QEventLoop::processEvents (qeventloop.cpp:100)
38  QtCore                          0x10279bff4         QEventLoop::exec (qeventloop.cpp:182)
39  QtCore                          0x102793640         QCoreApplication::exec (qcoreapplication.cpp:1347)
40  Qt Design Studio                0x1001c77a4         main (main.cpp:760)
41  dyld                            0x10058d084         start
42  dyld                            0x10058d14c         __
start_block_invoke
43  dyld                            0x10058d104         __Block_byref_object_dispose_
44  dyld                            0x10058d0f0         start
45  dyld                            0x10058d0fc         __Block_byref_object_copy_