diff --git a/containment/package/contents/ui/PanelBox.qml b/containment/package/contents/ui/PanelBox.qml
index a29230999..4bd7537bb 100644
--- a/containment/package/contents/ui/PanelBox.qml
+++ b/containment/package/contents/ui/PanelBox.qml
@@ -551,7 +551,15 @@ Item{
                 return 0;
             }
 
+            Behavior on opacity{
+                enabled: Latte.WindowSystem.compositingActive
+                NumberAnimation { duration: barLine.animationTime }
+            }
 
+            Behavior on opacity{
+                enabled: !Latte.WindowSystem.compositingActive
+                NumberAnimation { duration: 0 }
+            }
         }
 
         PlasmaCore.FrameSvgItem{