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Was able to crash ParaView when rendering a new piece of geometry after hitting the apply button and then hitting the X on the render view.I used a larger piece of geometry (150MB OBJ) so it takes a few moments for it to import.

Steps to reproduce: Launch ParaView -> File -> Open -> Select File -> Properties -> Apply then immediately click X in Layout 1.

Loguru caught a signal: SIGSEGV
Stack trace:
53            0x407e29 /opt/paraview-5.8.0/bin/paraview() [0x407e29]
52      0x7ffb0b25e830 __libc_start_main + 240
51            0x40eb1d /opt/paraview-5.8.0/bin/paraview() [0x40eb1d]
50      0x7ffb06718d30 QCoreApplication::exec() + 128
49      0x7ffb067102ea QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) + 234
48      0x7ffb06768e3f QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 95
47      0x7ffaf80eb49c g_main_context_iteration + 44
46      0x7ffaf80eb3f0 /lib/x86_64-linux-gnu/libglib-2.0.so.0(+0x4a3f0) [0x7ffaf80eb3f0]
45      0x7ffaf80eb197 g_main_context_dispatch + 679
44      0x7ffadca56cba /opt/Qt5.12.4/5.12.4/gcc_64/plugins/platforms/../../lib/libQt5XcbQpa.so.5(+0x6bcba) [0x7ffadca56cba]
43      0x7ffb06d6a76b QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 203
42      0x7ffb06d8d125 QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) + 261
41      0x7ffb06d8b9c9 QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) + 1161
40      0x7ffb06d8bb73 QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) + 1587
39      0x7ffb06711a28 QCoreApplication::notifyInternal2(QObject*, QEvent*) + 264
38      0x7ffb075eaaa0 QApplication::notify(QObject*, QEvent*) + 688
37      0x7ffb075e39ac QApplicationPrivate::notify_helper(QObject*, QEvent*) + 156
36      0x7ffb0763ddbb /opt/Qt5.12.4/5.12.4/gcc_64/lib/libQt5Widgets.so.5(+0x1badbb) [0x7ffb0763ddbb]
35      0x7ffb0763b121 /opt/Qt5.12.4/5.12.4/gcc_64/lib/libQt5Widgets.so.5(+0x1b8121) [0x7ffb0763b121]
34      0x7ffb075e9fba QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool) + 506
33      0x7ffb06711a28 QCoreApplication::notifyInternal2(QObject*, QEvent*) + 264
32      0x7ffb075eb07f QApplication::notify(QObject*, QEvent*) + 2191
31      0x7ffb075e3985 QApplicationPrivate::notify_helper(QObject*, QEvent*) + 117
30      0x7ffb067117bd QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) + 141
29      0x7ffb0a8e3c83 pqTabbedMultiViewWidget::eventFilter(QObject*, QEvent*) + 317
28      0x7ffb0a8e37af pqTabbedMultiViewWidget::closeTab(int) + 209
27      0x7ffb0a81c560 pqMultiViewWidget::destroyAllViews() + 260
26      0x7ffb0a0bcca6 pqObjectBuilder::destroy(pqView*) + 120
25      0x7ffb094cc760 vtkSMParaViewPipelineController::UnRegisterProxy(vtkSMProxy*) + 474
24      0x7ffb094ca07c vtkSMParaViewPipelineController::UnRegisterViewProxy(vtkSMProxy*, bool) + 1718
23      0x7ffb09540ff0 vtkSMSessionProxyManager::UnRegisterProxy(char const*, char const*, vtkSMProxy*) + 326
22      0x7ffb08756951 vtkObject::InvokeEvent(unsigned long, void*) + 61
21      0x7ffb0875642c /opt/paraview-5.8.0/bin/../lib/libvtkCommonCore-pv5.8.so.1(+0x80942c) [0x7ffb0875642c]
20      0x7ffb0856dcd9 vtkCallbackCommand::Execute(vtkObject*, unsigned long, void*) + 67
19      0x7ffb09b06c1e /opt/paraview-5.8.0/bin/../lib/libvtkGUISupportQt-pv5.8.so.1(+0x5cc1e) [0x7ffb09b06c1e]
18      0x7ffb09b06c8f /opt/paraview-5.8.0/bin/../lib/libvtkGUISupportQt-pv5.8.so.1(+0x5cc8f) [0x7ffb09b06c8f]
17      0x7ffb09b1998c /opt/paraview-5.8.0/bin/../lib/libvtkGUISupportQt-pv5.8.so.1(+0x6f98c) [0x7ffb09b1998c]
16      0x7ffb0673d4e9 QMetaObject::activate(QObject*, int, int, void**) + 1625
15      0x7ffb0a14183d /opt/paraview-5.8.0/bin/../lib/libpqCore-pv5.8.so.1(+0x15d83d) [0x7ffb0a14183d]
14      0x7ffb0a1160cd pqServerManagerObserver::proxyUnRegistered(vtkObject*, unsigned long, void*, void*, vtkCommand*) + 263
13      0x7ffb0a141f60 pqServerManagerObserver::proxyUnRegistered(QString const&, QString const&, vtkSMProxy*) + 126
12      0x7ffb0673d4e9 QMetaObject::activate(QObject*, int, int, void**) + 1625
11      0x7ffb0a13f96e /opt/paraview-5.8.0/bin/../lib/libpqCore-pv5.8.so.1(+0x15b96e) [0x7ffb0a13f96e]
10      0x7ffb0a1119c2 pqServerManagerModel::onProxyUnRegistered(QString const&, QString const&, vtkSMProxy*) + 968
9       0x7ffb0a140bea pqServerManagerModel::proxyRemoved(pqProxy*) + 86
8       0x7ffb0673d4e9 QMetaObject::activate(QObject*, int, int, void**) + 1625
7       0x7ffb0a90b28a /opt/paraview-5.8.0/bin/../lib/libpqComponents-pv5.8.so.1(+0x30c28a) [0x7ffb0a90b28a]
6       0x7ffb0a81acda pqMultiViewWidget::proxyRemoved(pqProxy*) + 156
5       0x7ffb0352d494 vtkSMViewLayoutProxy::RemoveView(vtkSMViewProxy*) + 356
4       0x7ffb0352b5ab vtkSMViewLayoutProxy::UpdateState() + 1047
3       0x7ffb0334d18c /opt/paraview-5.8.0/bin/../lib/libvtkRemotingViews-pv5.8.so.1(+0x21118c) [0x7ffb0334d18c]
2       0x7ffb08756951 vtkObject::InvokeEvent(unsigned long, void*) + 61
1       0x7ffb08756292 /opt/paraview-5.8.0/bin/../lib/libvtkCommonCore-pv5.8.so.1(+0x809292) [0x7ffb08756292]
0       0x7ffb0b2734b0 /lib/x86_64-linux-gnu/libc.so.6(+0x354b0) [0x7ffb0b2734b0]
(  72.172s) [paraview        ]                       :0     FATL| Signal: SIGSEGV