Ticket #34350: 34350.5.diff

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

@@ -3754 +3754 @@
                         AttachmentView: wp.media.view.Attachment.Library
                 });
 
-                this.listenTo( this.controller, 'toggle:upload:attachment', _.bind( this.toggleUploader, this ) );
+                this.controller.on( 'toggle:upload:attachment', _.bind( this.toggleUploader, this ) );
                 this.controller.on( 'edit:selection', this.editSelection );
                 this.createToolbar();
                 if ( this.options.sidebar ) {