diff --git a/src/shadowedrectangle.h b/src/shadowedrectangle.h
--- a/src/shadowedrectangle.h
+++ b/src/shadowedrectangle.h
@@ -158,9 +158,11 @@
     void componentComplete() override;
 
 protected:
+    void itemChange(QQuickItem::ItemChange change, const QQuickItem::ItemChangeData &value);
     QSGNode *updatePaintNode(QSGNode *node, QQuickItem::UpdatePaintNodeData *data) override;
 
 private:
+    void checkSoftwareItem();
     const std::unique_ptr<BorderGroup> m_border;
     const std::unique_ptr<ShadowGroup> m_shadow;
     qreal m_radius = 0.0;
diff --git a/src/shadowedrectangle.cpp b/src/shadowedrectangle.cpp
--- a/src/shadowedrectangle.cpp
+++ b/src/shadowedrectangle.cpp
@@ -172,7 +172,12 @@
 {
     QQuickItem::componentComplete();
 
-    if (window()->rendererInterface()->graphicsApi() == QSGRendererInterface::Software) {
+    checkSoftwareItem();
+}
+
+void ShadowedRectangle::checkSoftwareItem()
+{
+    if (!m_softwareItem && window() && window()->rendererInterface()->graphicsApi() == QSGRendererInterface::Software) {
         m_softwareItem = new PaintedRectangleItem{this};
 
         auto updateItem = [this]() {
@@ -198,6 +203,13 @@
     }
 }
 
+void ShadowedRectangle::itemChange(QQuickItem::ItemChange change, const QQuickItem::ItemChangeData &value)
+{
+    if (change == QQuickItem::ItemSceneChange && value.window) {
+        checkSoftwareItem();
+    }
+}
+
 QSGNode *ShadowedRectangle::updatePaintNode(QSGNode *node, QQuickItem::UpdatePaintNodeData *data)
 {
     Q_UNUSED(data);