diff --git a/src/plugins/qmldesigner/components/transitioneditor/transitioneditorsettingsdialog.cpp b/src/plugins/qmldesigner/components/transitioneditor/transitioneditorsettingsdialog.cpp
index b57a2b4e6de..375eb974f63 100644
--- a/src/plugins/qmldesigner/components/transitioneditor/transitioneditorsettingsdialog.cpp
+++ b/src/plugins/qmldesigner/components/transitioneditor/transitioneditorsettingsdialog.cpp
@@ -132,8 +132,10 @@ void TransitionEditorSettingsDialog::setupTransitions(const ModelNode &newTransi
         return;
     }
 
-    for (const auto &transition : transitions)
+    for (const auto &transition : transitions) {
+        transition.ensureIdExists();
         addTransitionTab(transition);
+    }
 
     if (newTransition.isValid()) {
         m_currentTransition = newTransition;
@@ -146,8 +148,10 @@ void TransitionEditorSettingsDialog::setupTransitions(const ModelNode &newTransi
 
 void TransitionEditorSettingsDialog::addTransitionTab(const QmlTimeline &node)
 {
+    QTC_ASSERT(node.modelNode().hasId(), return);
+
     auto transitionForm = new TransitionForm(this);
-    ui->timelineTab->addTab(transitionForm, node.modelNode().displayName());
+    ui->timelineTab->addTab(transitionForm, node.modelNode().id());
     transitionForm->setTransition(node);
 
     connect(transitionForm, &TransitionForm::stateGroupChanged,  this, [this](const ModelNode &transition, const ModelNode &stateGroup){