Ticket #24859: 24859.10.diff

src/wp-includes/js/media-views.js

@@ -5365 +5365 @@
                         if ( state ) {
                                 this.spinnerTimeout = _.delay(function( view ) {
                                         view.toolbar.get( 'spinner' ).show();
-                                }, 600, this );
+                                }, 300, this );
                         } else {
                                 this.toolbar.get( 'spinner' ).hide();
                                 clearTimeout( this.spinnerTimeout );