update panel shadows for isBusy state

containment/package/contents/ui/PanelBox.qml

@@ -98,6 +98,12 @@ Item{
         }
     }
 
+    Binding{
+        target: root
+        property: "currentPanelTransparency"
+        value: overlayedBackground.opacity>0 ? overlayedBackground.opacity*100 : solidBackground.opacity*100
+    }
+
     Binding {
         target: root
         property: "realPanelLength"
@@ -376,12 +382,6 @@ Item{
 
             onImagePathChanged: solidBackground.adjustPrefix();
 
-            Binding{
-                target: root
-                property: "currentPanelTransparency"
-                value: solidBackground.opacity * 100
-            }
-
             Connections{
                 target: root
 

containment/package/contents/ui/main.qml

@@ -255,8 +255,8 @@ Item {
             return plasmoid.configuration.panelShadows;
         }
 
-        //! Draw shadows for isBusy state only when current panelTransparency is greater than 40%
-        if (plasmoid.configuration.panelShadows && root.forcePanelForBusyBackground && currentPanelTransparency>40) {
+        //! Draw shadows for isBusy state only when current panelTransparency is greater than 10%
+        if (plasmoid.configuration.panelShadows && root.forcePanelForBusyBackground && currentPanelTransparency>10) {
             return true;
         }