Hawtio JavaScript error when accessing Quartz tab

When deploying a simple camel-quartz2 route for WildFly Camel (see https://issues.jboss.org/browse/ENTESB-5087) there is a JavaScript error when accessing the Quartz tab:

TypeError: b.data.children[0].parent is null (http://localhost:8080/hawtio/app/app.js?96aca89560df3efe:61:41)