Run the Quickstart in Red Hat JBoss Developer Studio or Eclipse section says:

"3. This starts the server, deploys the application, and opens a browser window that accesses the running application."

This is not correct, it only deploys the server side project. Client application must be run after step 2.

This was already resolved in https://issues.jboss.org/browse/JBEAP-13633
but this QS was not mentioned in JIRA.