Ticket #48409: 48409.patch

wp-admin/css/nav-menus.css

@@ -50 +50 @@
         margin: 10px 0 0;
 }
 
-.metabox-holder-disabled .postbox,
-.metabox-holder-disabled .accordion-section-content,
-.metabox-holder-disabled .accordion-section-title {
-        opacity: 0.5;
-        filter: alpha(opacity=50);
+.metabox-holder-disabled {
+        visibility: hidden;
 }
 
-.metabox-holder-disabled .button-controls .select-all {
-        display: none;
-}
-
 #wpbody {
         position: relative;
 }