Multiple Repeaters attached to DelegateModel parts crashes

ASSERT failure in QVector<T>::at: "index out of range", file qt5/qtbase/src/corelib/tools/qvector.h, line 419

1  raise                                                                          0x7ffff53fa295 
2  abort                                                                          0x7ffff53fb6da 
3  qt_message_fatal                                qlogging.cpp              1648 0x7ffff657816c 
4  QMessageLogger::fatal                           qlogging.cpp              790  0x7ffff6574670 
5  qt_assert_x                                     qglobal.cpp               3007 0x7ffff656db51 
6  QVector<QPointer<QQuickItem>>::at               qvector.h                 419  0x7ffff7b2276f 
7  QQuickRepeater::initItem                        qquickrepeater.cpp        413  0x7ffff7b21a5d 
8  QQuickRepeater::qt_static_metacall              moc_qquickrepeater_p.cpp  138  0x7ffff7c10718 
9  QQuickRepeater::qt_metacall                     moc_qquickrepeater_p.cpp  261  0x7ffff7c10d4d 
10 QMetaObject::metacall                           qmetaobject.cpp           295  0x7ffff67c7957 
11 QMetaObject::activate                           qobject.cpp               3745 0x7ffff67ff229 
12 QMetaObject::activate                           qobject.cpp               3595 0x7ffff67fe962 
13 QQmlInstanceModel::initItem                     moc_qqmlobjectmodel_p.cpp 236  0x7ffff6efb86e 
14 QQmlPartsModel::initPackage                     qqmldelegatemodel.cpp     3212 0x7ffff6ec9594 
15 QQmlDelegateModelGroupPrivate::initPackage      qqmldelegatemodel.cpp     2284 0x7ffff6ec5368 
16 QQmlDelegateModelPrivate::emitInitPackage       qqmldelegatemodel.cpp     803  0x7ffff6ebd5bf 
17 QQmlDelegateModelPrivate::setInitialState       qqmldelegatemodel.cpp     910  0x7ffff6ebdc13 
18 QQDMIncubationTask::setInitialState             qqmldelegatemodel.cpp     901  0x7ffff6ebdb9f 
19 QQmlIncubatorPrivate::incubate                  qqmlincubator.cpp         322  0x7ffff6e072d4 
20 QQmlEnginePrivate::incubate                     qqmlincubator.cpp         87   0x7ffff6e067b0 
21 QQmlDelegateModelItem::incubateObject           qqmldelegatemodel.cpp     1958 0x7ffff6ec4022 
22 QQmlDelegateModelPrivate::object                qqmldelegatemodel.cpp     981  0x7ffff6ebe29e 
23 QQmlPartsModel::object                          qqmldelegatemodel.cpp     3145 0x7ffff6ec9150 
24 QQuickRepeater::modelUpdated                    qquickrepeater.cpp        494  0x7ffff7b2237b 
25 QQuickRepeater::qt_static_metacall              moc_qquickrepeater_p.cpp  139  0x7ffff7c1074e 
26 QQuickRepeater::qt_metacall                     moc_qquickrepeater_p.cpp  261  0x7ffff7c10d4d 
27 QMetaObject::metacall                           qmetaobject.cpp           295  0x7ffff67c7957 
28 QMetaObject::activate                           qobject.cpp               3745 0x7ffff67ff229 
29 QMetaObject::activate                           qobject.cpp               3595 0x7ffff67fe962 
30 QQmlInstanceModel::modelUpdated                 moc_qqmlobjectmodel_p.cpp 222  0x7ffff6efb7b2 
31 QQmlPartsModel::emitModelUpdated                qqmldelegatemodel.cpp     3224 0x7ffff6ec964a 
32 QQmlDelegateModelGroupPrivate::emitModelUpdated qqmldelegatemodel.cpp     2269 0x7ffff6ec5242 
33 QQmlDelegateModelPrivate::emitChanges           qqmldelegatemodel.cpp     1444 0x7ffff6ec0a8f 
34 QQmlDelegateModel::componentComplete            qqmldelegatemodel.cpp     328  0x7ffff6ebc176 
35 QQmlObjectCreator::finalize                     qqmlobjectcreator.cpp     1206 0x7ffff6e95fd3 
36 QQmlComponentPrivate::complete                  qqmlcomponent.cpp         919  0x7ffff6e027d6 
37 QQmlComponentPrivate::completeCreate            qqmlcomponent.cpp         955  0x7ffff6e028be 
38 QQmlComponent::completeCreate                   qqmlcomponent.cpp         948  0x7ffff6e0286e 
39 QQmlComponent::create                           qqmlcomponent.cpp         781  0x7ffff6e02079 
40 QQmlApplicationEnginePrivate::_q_finishLoad     qqmlapplicationengine.cpp 130  0x7ffff6e86c2c 
41 QQmlApplicationEnginePrivate::startLoad         qqmlapplicationengine.cpp 109  0x7ffff6e869d5 
42 QQmlApplicationEngine::load                     qqmlapplicationengine.cpp 250  0x7ffff6e86f29 
43 main                                            main.cpp                  9    0x400e88