Ticket #42360: 42360.0.diff

src/wp-admin/js/customize-controls.js

@@ -1920 +1920 @@
                                 return;
                         }
 
-                        if ( expanded ) {
+                        function expand() {
 
                                 // Try to load controls if none are loaded yet.
                                 if ( 0 === section.loaded ) {
@@ -1965 +1965 @@
                                         args.completeCallback();
                                 }
                                 section.updateCount(); // Show this section's count.
+                        }
+
+                        if ( expanded ) {
+                                if ( section.panel() && api.panel( section.panel() ) ) {
+                                        api.panel( section.panel() ).expand({
+                                                duration: args.duration,
+                                                completeCallback: expand
+                                        });
+                                } else {
+                                        expand();
+                                }
                         } else {
                                 section.contentContainer.removeClass( 'current-section' );