Ticket #32886: 32886.11.diff

src/wp-admin/js/user-profile.js

@@ -109 +109 @@
                  * pass2 field to the pass1 field.
                  */
                 pw_field2.on( 'input propertychange', function() {
-                        pw_field.val( pw_field2.val() );
-                        pw_field.trigger( 'propertychange' );
+                        if ( pw_field2.val().length > 0 ) {
+                                pw_field.val( pw_field2.val() );
+                                pw_field.trigger( 'propertychange' );
+                        }
                 } );
 
                 pw_new.on( 'click', 'button.wp-generate-pw', function(){