this happens with docker-plugin, see https://github.com/jenkinsci/docker-plugin/issues/546

AuthorizationMatrixNodeProperty is proposed by docker-plugin as an optional NodeProperty to slave template (like other available NodeProperties).

The [Add Cloud] button do render html server side and invoke scripts before the DOM elements are actually added to the document. As a result document.getElementById return null and later invocation fail with `{{ Cannot read property 'parentNode' of null}}`. As a result the Add button has no effect and UI is blocked.