Ticket #43003: 43003.0.diff

src/wp-admin/js/widgets.js

@@ -517 +517 @@
         save : function( widget, del, animate, order ) {
                 var self = this, data, a,
                         sidebarId = widget.closest( 'div.widgets-sortables' ).attr( 'id' ),
-                        form = widget.find( 'form' );
+                        form = widget.find( 'form' ),
+                        isNew = '' !== widget.find( 'input.add_new' ).val();
 
-                if ( ! del && form.prop( 'checkValidity' ) && ! form[0].checkValidity() ) {
+                if ( ! del && ! isNew && form.prop( 'checkValidity' ) && ! form[0].checkValidity() ) {
                         return;
                 }