diff --git a/effects/presentwindows/presentwindows.h b/effects/presentwindows/presentwindows.h
--- a/effects/presentwindows/presentwindows.h
+++ b/effects/presentwindows/presentwindows.h
@@ -309,6 +309,9 @@
     // Grid layout info
     QList<GridSize> m_gridSizes;
 
+    // State of WindowForceBlurRole before this effect
+    QMap <EffectWindow*, bool> m_windowForceBlurRoleState;
+
     // Filter box
     EffectFrame* m_filterFrame;
     QString m_windowFilter;
diff --git a/effects/presentwindows/presentwindows.cpp b/effects/presentwindows/presentwindows.cpp
--- a/effects/presentwindows/presentwindows.cpp
+++ b/effects/presentwindows/presentwindows.cpp
@@ -244,10 +244,8 @@
         m_windowData.clear();
 
         foreach (EffectWindow * w, effects->stackingOrder()) {
-            if (w->isDock()) {
-                w->setData(WindowForceBlurRole, QVariant(false));
-                w->setData(WindowForceBackgroundContrastRole, QVariant(false));
-            }
+            w->setData(WindowForceBlurRole, QVariant(m_windowForceBlurRoleState.value(w, false)));
+            w->setData(WindowForceBackgroundContrastRole, QVariant(false));
         }
         effects->setActiveFullScreenEffect(NULL);
         effects->addRepaintFull();
@@ -1586,10 +1584,9 @@
         setHighlightedWindow(effects->activeWindow());
 
         foreach (EffectWindow * w, effects->stackingOrder()) {
-            if (w->isDock()) {
-                w->setData(WindowForceBlurRole, QVariant(true));
-                w->setData(WindowForceBackgroundContrastRole, QVariant(true));
-            }
+            m_windowForceBlurRoleState[w] = w->data(WindowForceBlurRole).toBool();
+            w->setData(WindowForceBlurRole, QVariant(true));
+            w->setData(WindowForceBackgroundContrastRole, QVariant(true));
         }
     } else {
         m_needInitialSelection = false;