Crash when clicking `ADD CASCADE` button after `gz sim` with default ogre2 value

[XINJIANGMO]

Environment

• OS Version: Ubuntu 24.04
• Source or binary build?
  Source , gz-sim9

Description

• Expected behavior: gazebo don't crash and showes gzerr information in terminal
• Actual behavior: gazebo crash

Steps to reproduce

1. gz sim shapes.sdf
2. from the plugin dropdown, select the Global Illumination Ci Vct plugin.
3. click ADD CASCADE button and crash

Output

(2025-09-02 08:54:33.295) [error] [Ogre2Scene.cc:1437] [GUI] Global Illumination CI VCT (ogre2) is currently only available with vulkan backend.
(2025-09-02 08:54:33.295) [error] [GlobalIlluminationCiVct.cc:224] [GUI] Failed to create GlobalIlluminationCiVct, GI plugin won't work.
Stack trace (most recent call last):
#31   Object "/lib/x86_64-linux-gnu/libglib-2.0.so.0", at 0x73f507d145b4, in 
#30   Object "/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5", at 0x73f4fbafcd05, in 
#29   Object "/lib/x86_64-linux-gnu/libQt5Gui.so.5", at 0x73f501f17bfb, in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>)
#28   Object "/lib/x86_64-linux-gnu/libQt5Gui.so.5", at 0x73f501f45a3a, in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*)
#27   Object "/lib/x86_64-linux-gnu/libQt5Core.so.5", at 0x73f5040d8117, in QCoreApplication::notifyInternal2(QObject*, QEvent*)
#26   Object "/lib/x86_64-linux-gnu/libQt5Widgets.so.5", at 0x73f50276bd44, in QApplicationPrivate::notify_helper(QObject*, QEvent*)
#25   Object "/lib/x86_64-linux-gnu/libQt5Gui.so.5", at 0x73f501f52034, in QWindow::event(QEvent*)
#24   Object "/lib/x86_64-linux-gnu/libQt5Quick.so.5", at 0x73f50368d76f, in QQuickWindowPrivate::handleMouseEvent(QMouseEvent*)
#23   Object "/lib/x86_64-linux-gnu/libQt5Quick.so.5", at 0x73f50368c43f, in QQuickWindowPrivate::deliverPointerEvent(QQuickPointerEvent*)
#22   Object "/lib/x86_64-linux-gnu/libQt5Quick.so.5", at 0x73f50368abf5, in QQuickWindowPrivate::deliverMouseEvent(QQuickPointerMouseEvent*)
#21   Object "/lib/x86_64-linux-gnu/libQt5Core.so.5", at 0x73f5040d8117, in QCoreApplication::notifyInternal2(QObject*, QEvent*)
#20   Object "/lib/x86_64-linux-gnu/libQt5Widgets.so.5", at 0x73f50276bd44, in QApplicationPrivate::notify_helper(QObject*, QEvent*)
#19   Object "/lib/x86_64-linux-gnu/libQt5Quick.so.5", at 0x73f50366bf67, in QQuickItem::event(QEvent*)
#18   Object "/lib/x86_64-linux-gnu/libQt5QuickTemplates2.so.5", at 0x73f4f17132e8, in QQuickControl::mouseReleaseEvent(QMouseEvent*)
#17   Object "/lib/x86_64-linux-gnu/libQt5QuickTemplates2.so.5", at 0x73f4f16f2eb0, in QQuickAbstractButtonPrivate::handleRelease(QPointF const&)
#16   Object "/lib/x86_64-linux-gnu/libQt5Core.so.5", at 0x73f50411271f, in 
#15   Object "/lib/x86_64-linux-gnu/libQt5Qml.so.5", at 0x73f5030dc156, in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**)
#14   Object "/lib/x86_64-linux-gnu/libQt5Qml.so.5", at 0x73f5030a7adf, in 
#13   Object "/lib/x86_64-linux-gnu/libQt5Qml.so.5", at 0x73f5030a6860, in QQmlBoundSignalExpression::evaluate(void**)
#12   Object "/lib/x86_64-linux-gnu/libQt5Qml.so.5", at 0x73f5030f82bf, in QQmlJavaScriptExpression::evaluate(QV4::CallData*, bool*)
#11   Object "/lib/x86_64-linux-gnu/libQt5Qml.so.5", at 0x73f502f625a1, in QV4::Function::call(QV4::Value const*, QV4::Value const*, int, QV4::ExecutionContext const*)
#10   Object "/lib/x86_64-linux-gnu/libQt5Qml.so.5", at 0x73f502fd25fe, in 
#9    Object "/lib/x86_64-linux-gnu/libQt5Qml.so.5", at 0x73f502fceddb, in 
#8    Object "/lib/x86_64-linux-gnu/libQt5Qml.so.5", at 0x73f502f6343e, in 
#7    Object "/lib/x86_64-linux-gnu/libQt5Qml.so.5", at 0x73f502fd25fe, in 
#6    Object "/lib/x86_64-linux-gnu/libQt5Qml.so.5", at 0x73f502fceddb, in 
#5    Object "/lib/x86_64-linux-gnu/libQt5Qml.so.5", at 0x73f502fb12d9, in QV4::QObjectMethod::callInternal(QV4::Value const*, QV4::Value const*, int) const
#4    Object "/lib/x86_64-linux-gnu/libQt5Qml.so.5", at 0x73f502fae247, in 
#3    Object "/lib/x86_64-linux-gnu/libQt5Qml.so.5", at 0x73f5030dc6a9, in 
#2    Object "/home/momo/w_s/install/lib/gz-sim-9/plugins/gui/libGlobalIlluminationCiVct.so", at 0x73f4a538d282, in 
#1    Object "/home/momo/w_s/install/lib/gz-sim-9/plugins/gui/libGlobalIlluminationCiVct.so", at 0x73f4a538c36c, in 
#0    Object "/home/momo/w_s/install/lib/gz-sim-9/plugins/gui/libGlobalIlluminationCiVct.so", at 0x73f4a5354d33, in 
段错误 (地址没有映射到对象 [(nil)])

[XINJIANGMO]

I have verified that gz-sim10 also has this problem