diff --git a/src/plugins/qmldesigner/components/edit3d/edit3dwidget.cpp b/src/plugins/qmldesigner/components/edit3d/edit3dwidget.cpp
index f7c6ae22cfe..cb16233475d 100644
--- a/src/plugins/qmldesigner/components/edit3d/edit3dwidget.cpp
+++ b/src/plugins/qmldesigner/components/edit3d/edit3dwidget.cpp
@@ -248,6 +248,16 @@ bool Edit3DWidget::isPasteAvailable() const
     return QApplication::clipboard()->text().startsWith(Constants::HEADER_3DPASTE_CONTENT);
 }
 
+bool Edit3DWidget::isSceneLocked() const
+{
+    if (m_view && m_view->hasModelNodeForInternalId(m_canvas->activeScene())) {
+        ModelNode node = m_view->modelNodeForInternalId(m_canvas->activeScene());
+        if (ModelNode::isThisOrAncestorLocked(node))
+            return true;
+    }
+    return false;
+}
+
 // Called by the view to update the "create" sub-menu when the Quick3D entries are ready.
 void Edit3DWidget::updateCreateSubMenu(const QStringList &keys,
                                        const QHash<QString, QList<ItemLibraryEntry>> &entriesMap)
@@ -286,7 +296,7 @@ void Edit3DWidget::updateCreateSubMenu(const QStringList &keys,
 void Edit3DWidget::onCreateAction()
 {
     QAction *action = qobject_cast<QAction *>(sender());
-    if (!action || !m_view || !m_view->model())
+    if (!action || !m_view || !m_view->model() || isSceneLocked())
         return;
 
     m_view->executeInTransaction(__FUNCTION__, [&] {
@@ -374,6 +384,9 @@ void Edit3DWidget::showContextMenu(const QPoint &pos, const ModelNode &modelNode
     const bool anyNodeSelected = view()->hasSelectedModelNodes();
     const bool selectionExcludingRoot = anyNodeSelected && !view()->rootModelNode().isSelected();
 
+    if (m_createSubMenu)
+        m_createSubMenu->setEnabled(!isSceneLocked());
+
     m_editComponentAction->setEnabled(isSingleComponent);
     m_editMaterialAction->setEnabled(isModel);
     m_duplicateAction->setEnabled(selectionExcludingRoot);
diff --git a/src/plugins/qmldesigner/components/edit3d/edit3dwidget.h b/src/plugins/qmldesigner/components/edit3d/edit3dwidget.h
index b7d1ec996a7..37298dfb281 100644
--- a/src/plugins/qmldesigner/components/edit3d/edit3dwidget.h
+++ b/src/plugins/qmldesigner/components/edit3d/edit3dwidget.h
@@ -52,6 +52,7 @@ private:
     void createContextMenu();
 
     bool isPasteAvailable() const;
+    bool isSceneLocked() const;
 
     QPointer<Edit3DView> m_edit3DView;
     QPointer<Edit3DView> m_view;
diff --git a/src/plugins/qmldesigner/components/navigator/nameitemdelegate.cpp b/src/plugins/qmldesigner/components/navigator/nameitemdelegate.cpp
index f56a5477fec..65822094394 100644
--- a/src/plugins/qmldesigner/components/navigator/nameitemdelegate.cpp
+++ b/src/plugins/qmldesigner/components/navigator/nameitemdelegate.cpp
@@ -211,21 +211,23 @@ void NameItemDelegate::paint(QPainter *painter,
     }
 
     ModelNode node = getModelNode(modelIndex);
-    NavigatorWidget *widget = qobject_cast<NavigatorWidget *>(styleOption.widget->parent());
-    if (widget && !widget->dragType().isEmpty()) {
-        QByteArray dragType = widget->dragType();
-        const NodeMetaInfo metaInfo = node.metaInfo();
-        const NodeMetaInfo dragInfo = node.model()->metaInfo(dragType);
-        ChooseFromPropertyListFilter *filter = new ChooseFromPropertyListFilter(dragInfo, metaInfo, true);
+    if (!ModelNode::isThisOrAncestorLocked(node)) {
+        NavigatorWidget *widget = qobject_cast<NavigatorWidget *>(styleOption.widget->parent());
+        if (widget && !widget->dragType().isEmpty()) {
+            QByteArray dragType = widget->dragType();
+            const NodeMetaInfo metaInfo = node.metaInfo();
+            const NodeMetaInfo dragInfo = node.model()->metaInfo(dragType);
+            ChooseFromPropertyListFilter *filter = new ChooseFromPropertyListFilter(dragInfo, metaInfo, true);
 
-        if (!filter->propertyList.isEmpty()) {
-            painter->setOpacity(0.5);
-            painter->fillRect(styleOption.rect.adjusted(0, delegateMargin, 0, -delegateMargin),
-                              Theme::getColor(Theme::Color::DSnavigatorDropIndicatorBackground));
-            painter->setOpacity(1.0);
-            painter->setPen(Theme::getColor(Theme::Color::DSnavigatorTextSelected));
+            if (!filter->propertyList.isEmpty()) {
+                painter->setOpacity(0.5);
+                painter->fillRect(styleOption.rect.adjusted(0, delegateMargin, 0, -delegateMargin),
+                                  Theme::getColor(Theme::Color::DSnavigatorDropIndicatorBackground));
+                painter->setOpacity(1.0);
+                painter->setPen(Theme::getColor(Theme::Color::DSnavigatorTextSelected));
+            }
+            delete filter;
         }
-        delete filter;
     }
 
     iconOffset = drawIcon(painter, styleOption, modelIndex);