Github user neykov commented on a diff in the pull request: https://github.com/apache/brooklyn-ui/pull/34#discussion_r81372539 --- Diff: src/main/webapp/assets/js/view/application-add-wizard.js --- @@ -680,10 +680,12 @@ define([ this.$('.required-config-loading').hide() if (catalogEntryItem!=null && catalogEntryItem.config!=null) { var that = this - _.each(catalogEntryItem.config, function (cfg) { - if (cfg.priority !== undefined) { + _.chain(catalogEntryItem.config).sortBy(function (cfg){ + return !isNaN(cfg.priority) ? cfg.priority : 99999; + }).each(function (cfg) { + if (cfg.pinned === true || (cfg.contraints.indexOf('required') > -1 && typeof cfg.defaultValue === 'string' && cfg.defaultValue === '')) { --- End diff -- Agree, that's my point. `defaultValue == null` on the server side is serialized as missing (`undefined`) on the wire. Which means that `cfg.contraints.indexOf('required') > -1 && typeof cfg.defaultValue === 'string' && cfg.defaultValue === ''` will be `false` for `undefined`. So it will not be shown, even if required.
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