WebEngineView, QRhi, <select>; no context menu, and a crash

#0  0x00005555574aa0d8 in  ()
#1  0x00007ffff13b9011 in QXcbWindow::handleNativeEvent(xcb_generic_event_t*) (this=<optimized out>, event=0x555556cc73b0) at /home/qt/work/qt/qtbase/src/plugins/platforms/xcb/qxcbwindow.cpp:1713
#2  0x00007ffff137e80b in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) (this=this@entry=0x5555555d0520, event=event@entry=0x555556cc73b0)
    at /home/qt/work/qt/qtbase/src/plugins/platforms/xcb/qxcbconnection.cpp:695
#3  0x00007ffff137ef06 in QXcbConnection::processXcbEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x5555555d0520, flags=...) at /home/qt/work/qt/qtbase/src/plugins/platforms/xcb/qxcbconnection.cpp:1087
#4  0x00007ffff139ed17 in xcbSourceDispatch(GSource*, GSourceFunc, gpointer) (source=<optimized out>) at /home/qt/work/qt/qtbase/src/plugins/platforms/xcb/qxcbeventdispatcher.cpp:55
#5  0x00007ffff4b1bd3b in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007ffff4b712b8 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007ffff4b193e3 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007ffff5865e8e in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x55555570ea20, flags=...) at /home/qt/work/qt/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:399
#9  0x00007ffff558cd0b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fffffffd420, flags=..., flags@entry=...) at /home/qt/work/qt/qtbase/src/corelib/global/qflags.h:77
#10 0x00007ffff5588c9a in QCoreApplication::exec() () at /home/qt/work/qt/qtbase/src/corelib/global/qflags.h:77
#11 0x00005555555641ff in main(int, char**) (argc=1, argv=0x7fffffffd818) at /home/foo/qtdeclarative/examples/quick/rendercontrol/rendercontrol_rhi/main.cpp:661

git clone https://code.qt.io/qt/qtdeclarative.git --depth 1 --branch v6.9.0-rc1
git apply patch.diff

commit 4392f36f667c0ce85d3c2664a6de940daf33382f
Author: Foo <foo@foo.com>
Date:   Fri Mar 21 19:15:54 2025 +0200

    Crash me

diff --git a/examples/quick/rendercontrol/rendercontrol_rhi/CMakeLists.txt b/examples/quick/rendercontrol/rendercontrol_rhi/CMakeLists.txt
index be70e02d..807a3be5 100644
--- a/examples/quick/rendercontrol/rendercontrol_rhi/CMakeLists.txt
+++ b/examples/quick/rendercontrol/rendercontrol_rhi/CMakeLists.txt
@@ -4,9 +4,9 @@
 cmake_minimum_required(VERSION 3.16)
 project(rendercontrol_rhi LANGUAGES CXX)
 
-find_package(Qt6 REQUIRED COMPONENTS Core Gui Quick Widgets)
+find_package(Qt6 REQUIRED COMPONENTS Core Gui Quick Widgets WebEngineQuick)
 
-qt_standard_project_setup(REQUIRES 6.8)
+qt_standard_project_setup(REQUIRES 6.9)
 
 qt_add_executable(rendercontrol_rhi WIN32 MACOSX_BUNDLE
     main.cpp
@@ -17,6 +17,8 @@ target_link_libraries(rendercontrol_rhi PRIVATE
     Qt6::GuiPrivate
     Qt6::Quick
     Qt6::Widgets
+    Qt6::WebEngineQuick
+    Qt6::WebEngineCore
 )
 
 qt_add_qml_module(rendercontrol_rhi
@@ -25,6 +27,8 @@ qt_add_qml_module(rendercontrol_rhi
         "demo.qml"
     RESOURCE_PREFIX
         "/"
+    RESOURCES
+        index.html
     NO_RESOURCE_TARGET_PATH
 )
 
diff --git a/examples/quick/rendercontrol/rendercontrol_rhi/demo.qml b/examples/quick/rendercontrol/rendercontrol_rhi/demo.qml
index 707d9cb3..c80b4d49 100644
--- a/examples/quick/rendercontrol/rendercontrol_rhi/demo.qml
+++ b/examples/quick/rendercontrol/rendercontrol_rhi/demo.qml
@@ -2,155 +2,25 @@
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
 
 import QtQuick
-import QtQuick.Particles
+import QtWebEngine
 
 Rectangle {
     id: root
 
-    gradient: Gradient {
-        GradientStop { position: 0; color: "steelblue" }
-        GradientStop { position: 1; color: "black" }
-    }
-
-    Text {
-        anchors.centerIn: parent
-        text: "Qt Quick in a texture"
-        font.pointSize: 40
-        color: "white"
-
-        SequentialAnimation on rotation {
-            PauseAnimation { duration: 2500 }
-            NumberAnimation { from: 0; to: 360; duration: 5000; easing.type: Easing.InOutCubic }
-            loops: Animation.Infinite
-        }
-    }
-
-    ParticleSystem {
-        id: particles
+    WebEngineView {
+        id: webView
         anchors.fill: parent
+        url: "qrc:///index.html"
+        focus: true
+        backgroundColor: "transparent"
 
-        ImageParticle {
-            id: smoke
-            system: particles
-            anchors.fill: parent
-            groups: ["A", "B"]
-            source: "qrc:///particleresources/glowdot.png"
-            colorVariation: 0
-            color: "#00111111"
-        }
-        ImageParticle {
-            id: flame
-            anchors.fill: parent
-            system: particles
-            groups: ["C", "D"]
-            source: "qrc:///particleresources/glowdot.png"
-            colorVariation: 0.1
-            color: "#00ff400f"
-        }
-
-        Emitter {
-            id: fire
-            system: particles
-            group: "C"
-
-            y: parent.height
-            width: parent.width
-
-            emitRate: 350
-            lifeSpan: 3500
-
-            acceleration: PointDirection { y: -17; xVariation: 3 }
-            velocity: PointDirection {xVariation: 3}
-
-            size: 24
-            sizeVariation: 8
-            endSize: 4
-        }
-
-        TrailEmitter {
-            id: fireSmoke
-            group: "B"
-            system: particles
-            follow: "C"
-            width: root.width
-            height: root.height - 68
-
-            emitRatePerParticle: 1
-            lifeSpan: 2000
-
-            velocity: PointDirection {y:-17*6; yVariation: -17; xVariation: 3}
-            acceleration: PointDirection {xVariation: 3}
-
-            size: 36
-            sizeVariation: 8
-            endSize: 16
+        onContextMenuRequested: function(request) {  // does not actually run for <select> ?
+            request.accepted = true;
+            console.log("context menu stopped");
         }
 
-        TrailEmitter {
-            id: fireballFlame
-            anchors.fill: parent
-            system: particles
-            group: "D"
-            follow: "E"
-
-            emitRatePerParticle: 120
-            lifeSpan: 180
-            emitWidth: TrailEmitter.ParticleSize
-            emitHeight: TrailEmitter.ParticleSize
-            emitShape: EllipseShape{}
-
-            size: 16
-            sizeVariation: 4
-            endSize: 4
-        }
-
-        TrailEmitter {
-            id: fireballSmoke
-            anchors.fill: parent
-            system: particles
-            group: "A"
-            follow: "E"
-
-            emitRatePerParticle: 128
-            lifeSpan: 2400
-            emitWidth: TrailEmitter.ParticleSize
-            emitHeight: TrailEmitter.ParticleSize
-            emitShape: EllipseShape{}
-
-            velocity: PointDirection {yVariation: 16; xVariation: 16}
-            acceleration: PointDirection {y: -16}
-
-            size: 24
-            sizeVariation: 8
-            endSize: 8
-        }
-
-        Emitter {
-            id: balls
-            system: particles
-            group: "E"
-
-            y: parent.height
-            width: parent.width
-
-            emitRate: 2
-            lifeSpan: 7000
-
-            velocity: PointDirection {y:-17*4*2; xVariation: 6*6}
-            acceleration: PointDirection {y: 17*2; xVariation: 6*6}
-
-            size: 8
-            sizeVariation: 4
-        }
-
-        Turbulence { //A bit of turbulence makes the smoke look better
-            anchors.fill: parent
-            groups: ["A","B"]
-            strength: 32
-            system: particles
+        onJavaScriptConsoleMessage: function(level, message, lineNumber, sourceID) {
+            console.log(message);
         }
     }
-
-    onWidthChanged: particles.reset()
-    onHeightChanged: particles.reset()
 }
diff --git a/examples/quick/rendercontrol/rendercontrol_rhi/index.html b/examples/quick/rendercontrol/rendercontrol_rhi/index.html
new file mode 100644
index 00000000..b5adb73a
--- /dev/null
+++ b/examples/quick/rendercontrol/rendercontrol_rhi/index.html
@@ -0,0 +1,20 @@
+<select style="width:100%;height:100%;">
+  <option value="volvo">Volvo</option>
+  <option value="saab">Saab</option>
+  <option value="mercedes">Mercedes</option>
+  <option value="audi">Audi</option>
+</select>
+
+<script>
+  document.addEventListener('mousedown', (event) => {
+    console.log(`left mouse button down at X: ${event.clientX}, Y: ${event.clientY}`);
+  });
+
+  document.addEventListener('mouseup', (event) => {
+    console.log(`Mouse button released at X: ${event.clientX}, Y: ${event.clientY}`);
+  });
+
+  document.addEventListener('click', (event) => {
+    console.log(`Click detected at X: ${event.clientX}, Y: ${event.clientY}`);
+  });
+</script>
\ No newline at end of file
diff --git a/examples/quick/rendercontrol/rendercontrol_rhi/main.cpp b/examples/quick/rendercontrol/rendercontrol_rhi/main.cpp
index 6b66d76e..96a21c71 100644
--- a/examples/quick/rendercontrol/rendercontrol_rhi/main.cpp
+++ b/examples/quick/rendercontrol/rendercontrol_rhi/main.cpp
@@ -8,6 +8,7 @@
 #include <QMenuBar>
 #include <QStatusBar>
 #include <QFileDialog>
+#include <QTimer>
 #include <QMessageBox>
 #include <QLabel>
 #include <QScrollArea>
@@ -144,6 +145,29 @@ MainWindow::MainWindow()
     });
     controlLayout->addWidget(btnMulti);
 
+    QPushButton *btnCrash = new QPushButton(tr("Crash me"));
+    QObject::connect(btnCrash, &QPushButton::clicked, btn, [this] {
+        QMetaObject::invokeMethod(this, [=] {
+            constexpr auto mouse_pos = QPointF(100, 100);
+            constexpr Qt::MouseButton mouse_btn = Qt::LeftButton;
+            constexpr QEvent::Type mouse_press = QEvent::MouseButtonPress;
+            constexpr QEvent::Type mouse_release = QEvent::MouseButtonRelease;
+
+            // left click
+            QMouseEvent mouseEvent(mouse_press, mouse_pos, mouse_pos, mouse_btn, mouse_btn, Qt::NoModifier);
+            QCoreApplication::sendEvent(m_scene.get(), &mouseEvent);
+
+            // left release
+            QTimer::singleShot(50, this, [this, mouse_btn, mouse_release, mouse_pos]() {
+                QMouseEvent mouseEvent2(mouse_release, mouse_pos, mouse_pos, mouse_btn, mouse_btn, Qt::NoModifier);
+
+                QCoreApplication::sendEvent(m_scene.get(), &mouseEvent2);
+            });
+
+        }, Qt::QueuedConnection);
+    });
+    controlLayout->addWidget(btnCrash);
+
 //! [anim-slider]
     QSlider *animSlider = new QSlider;
     animSlider->setOrientation(Qt::Horizontal);