Atspi.Table.get_row_column_extents_at_index can cause segfault in tree

In [3]: Atspi.Table.get_row_column_extents_at_index(acc, 11)
Out[3]: (True, row=5, col=1, row_extents=1, col_extents=1, is_selected=False)
In [4]: Atspi.Table.get_row_column_extents_at_index(acc, 12)
---------------------------------------------------------------------------
Error                                     Traceback (most recent call last)
Cell In[4], line 1
----> 1 Atspi.Table.get_row_column_extents_at_index(acc, 12)

Error: atspi_error: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken. (1)

$ ./simpletreemodel 
QAccessibleTree::indexFromLogical: invalid index:  6 0  for  QTreeView(0x7ffca99b9790)
Requested invalid tree cell: 6 0

Thread 1 "simpletreemodel" received signal SIGSEGV, Segmentation fault.
AtSpiAdaptor::tableInterface (this=this@entry=0x562bdf6a5380, interface=interface@entry=0x7f30d4003448, function=..., message=..., connection=...) at atspiadaptor.cpp:2443
2443                QAccessibleTableCellInterface *cell = interface->tableInterface()->cellAt(row, col)->tableCellInterface();                                              
(gdb) bt
#0  AtSpiAdaptor::tableInterface (this=this@entry=0x562bdf6a5380, interface=interface@entry=0x7f30d4003448, function=..., message=..., connection=...)
    at atspiadaptor.cpp:2443
#1  0x00007f30e238cbb5 in AtSpiAdaptor::handleMessage (this=this@entry=0x562bdf6a5380, message=..., connection=...) at atspiadaptor.cpp:1315
#2  0x00007f30efa4f70a in QDBusConnectionPrivate::activateObject (this=0x7f30dc015980, node=..., msg=..., pathStartPos=27) at qdbusintegrator.cpp:1464
#3  0x00007f30efa51e64 in QDBusActivateObjectEvent::placeMetaCall (this=0x562bdf65ff30) at qdbusintegrator.cpp:1623
#4  0x00007f30f36df0cb in QObject::event (this=0x562bdf6a5380, e=0x562bdf65ff30) at kernel/qobject.cpp:1347
#5  0x00007f30f3baeb75 in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x562bdf6a5380, e=0x562bdf65ff30) at kernel/qapplication.cpp:3640
#6  0x00007f30f36b4548 in QCoreApplication::notifyInternal2 (receiver=0x562bdf6a5380, event=0x562bdf65ff30) at kernel/qcoreapplication.cpp:1064
#7  0x00007f30f36b4762 in QCoreApplication::sendEvent (receiver=<optimized out>, event=<optimized out>) at kernel/qcoreapplication.cpp:1462
#8  0x00007f30f36b79f5 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x562bdf334b60) at kernel/qcoreapplication.cpp:1821
#9  0x00007f30f36b7cad in QCoreApplication::sendPostedEvents (receiver=<optimized out>, event_type=<optimized out>) at kernel/qcoreapplication.cpp:1680
#10 0x00007f30f3706f9f in postEventSourceDispatch (s=0x562bdf4739c0) at kernel/qeventdispatcher_glib.cpp:277
#11 0x00007f30f2112e5c in g_main_dispatch (context=0x7f30dc000ec0) at ../glib/gmain.c:3476
#12 g_main_context_dispatch_unlocked (context=0x7f30dc000ec0) at ../glib/gmain.c:4284
#13 0x00007f30f216ddd8 in g_main_context_iterate_unlocked.isra.0 (context=context@entry=0x7f30dc000ec0, block=block@entry=1, dispatch=dispatch@entry=1, 
    self=<optimized out>) at ../glib/gmain.c:4349
#14 0x00007f30f2110ad3 in g_main_context_iteration (context=0x7f30dc000ec0, may_block=1) at ../glib/gmain.c:4414
#15 0x00007f30f3706a89 in QEventDispatcherGlib::processEvents (this=0x562bdf4750f0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#16 0x00007f30f36b2f0b in QEventLoop::exec (this=this@entry=0x7ffca99b96d0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:69
#17 0x00007f30f36bb19b in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#18 0x00007f30f2760edd in QGuiApplication::exec () at kernel/qguiapplication.cpp:1863
#19 0x00007f30f3baeae9 in QApplication::exec () at kernel/qapplication.cpp:2832
#20 0x0000562bdefe06a3 in main (argc=<optimized out>, argv=<optimized out>) at main.cpp:72