diff --git a/effects/translucency/package/contents/code/main.js b/effects/translucency/package/contents/code/main.js
--- a/effects/translucency/package/contents/code/main.js
+++ b/effects/translucency/package/contents/code/main.js
@@ -185,7 +185,8 @@
                 return;
             }
             if (window === effects.activeWindow ||
-                    window.managed === false ||
+                    window.popup === true ||
+                    (window.x11Client === true && window.managed === false) ||
                     window.desktopWindow === true ||
                     window.dock === true ||
                     window.visible === false ||