Pass validate to the next callback

src/window.js

@@ -226,6 +226,7 @@
                     if (validate && this.screen.attributes.pre_validate) {
                         return this.screen.current_record.pre_validate();
                     }
+                    return validate;
                 }.bind(this)).then(function(validate) {
                     var closing_prm = jQuery.Deferred();
                     if (validate && this.save_current) {