diff --git a/shell/panelconfigview.h b/shell/panelconfigview.h
--- a/shell/panelconfigview.h
+++ b/shell/panelconfigview.h
@@ -79,7 +79,7 @@
     void syncLocation();
 
 private Q_SLOTS:
-    void updateContrast();
+    void updateBlurBehindAndContrast();
 
 Q_SIGNALS:
     void visibilityModeChanged();
diff --git a/shell/panelconfigview.cpp b/shell/panelconfigview.cpp
--- a/shell/panelconfigview.cpp
+++ b/shell/panelconfigview.cpp
@@ -67,9 +67,8 @@
     KWindowSystem::setState(winId(), NET::KeepAbove);
     KWindowSystem::forceActiveWindow(winId());
 
-    KWindowEffects::enableBlurBehind(winId(), true);
-    updateContrast();
-    connect(&m_theme, &Plasma::Theme::themeChanged, this, &PanelConfigView::updateContrast);
+    updateBlurBehindAndContrast();
+    connect(&m_theme, &Plasma::Theme::themeChanged, this, &PanelConfigView::updateBlurBehindAndContrast);
 
     rootContext()->setContextProperty(QStringLiteral("panel"), panelView);
     rootContext()->setContextProperty(QStringLiteral("configDialog"), this);
@@ -88,8 +87,9 @@
     syncLocation();
 }
 
-void PanelConfigView::updateContrast()
+void PanelConfigView::updateBlurBehindAndContrast()
 {
+    KWindowEffects::enableBlurBehind(winId(), m_theme.blurBehindEnabled());
     KWindowEffects::enableBackgroundContrast(winId(), m_theme.backgroundContrastEnabled(),
                                                       m_theme.backgroundContrast(),
                                                       m_theme.backgroundIntensity(),
@@ -190,8 +190,7 @@
     setFlags(Qt::WindowFlags((flags() | Qt::FramelessWindowHint) & (~Qt::WindowDoesNotAcceptFocus)));
     KWindowSystem::setState(winId(), NET::KeepAbove);
     KWindowSystem::forceActiveWindow(winId());
-    KWindowEffects::enableBlurBehind(winId(), true);
-    updateContrast();
+    updateBlurBehindAndContrast();
     syncGeometry();
     syncLocation();