diff --git a/src/controls/src/application_p.cpp b/src/controls/src/application_p.cpp
index b329c82..0fb191b 100644
--- a/src/controls/src/application_p.cpp
+++ b/src/controls/src/application_p.cpp
@@ -51,3 +51,20 @@ bool Application_p::overridesSystemGestures()
 {
     return m_overridesSystemGestures;
 }
+
+void Application_p::itemChange(ItemChange change, const ItemChangeData &data)
+{
+    QQuickItem::itemChange(change, data);
+    if (change == ItemSceneChange && data.window) {
+        auto syncSize = [this]() {
+            QQuickWindow *w = window();
+            if (w && w->width() > 0) {
+                setWidth(w->width());
+                setHeight(w->height());
+            }
+        };
+        syncSize();
+        connect(data.window, &QQuickWindow::widthChanged, this, syncSize);
+        connect(data.window, &QQuickWindow::heightChanged, this, syncSize);
+    }
+}
diff --git a/src/controls/src/application_p.h b/src/controls/src/application_p.h
index 414db5a..1cfede6 100644
--- a/src/controls/src/application_p.h
+++ b/src/controls/src/application_p.h
@@ -47,6 +47,9 @@ class Application_p : public QQuickItem
 private:
     bool m_overridesSystemGestures;
 
+protected:
+    void itemChange(ItemChange change, const ItemChangeData &data) override;
+
 signals:
     void overridesSystemGesturesChanged();
 };