diff --git a/effects/desktopgrid/desktopgrid.h b/effects/desktopgrid/desktopgrid.h
--- a/effects/desktopgrid/desktopgrid.h
+++ b/effects/desktopgrid/desktopgrid.h
@@ -175,6 +175,9 @@
     // Shortcut - needed to toggle the effect
     QList<QKeySequence> shortcut;
 
+    // State of WindowForceBlurRole before this effect
+    QMap <EffectWindow*, bool> m_windowForceBlurRoleState;
+
     PresentWindowsEffectProxy* m_proxy;
     QList<WindowMotionManager> m_managers;
     bool m_usePresentWindows;
diff --git a/effects/desktopgrid/desktopgrid.cpp b/effects/desktopgrid/desktopgrid.cpp
--- a/effects/desktopgrid/desktopgrid.cpp
+++ b/effects/desktopgrid/desktopgrid.cpp
@@ -162,6 +162,12 @@
         if (!activated && timeline.currentValue() == 0 && !(isUsingPresentWindows() && isMotionManagerMovingWindows()))
             finish();
     }
+
+    for (auto const &w : effects->stackingOrder()) {
+        m_windowForceBlurRoleState[w] = w->data(WindowForceBlurRole).toBool();
+        w->setData(WindowForceBlurRole, QVariant(true));
+    }
+
     effects->prePaintScreen(data, time);
 }
 
@@ -249,6 +255,11 @@
             }
         }
     }
+
+    for (auto &w : effects->stackingOrder()) {
+        w->setData(WindowForceBlurRole, m_windowForceBlurRoleState.value(w, false));
+    }
+
     effects->postPaintScreen();
 }