i found an entry in the jboss bugtracker: https://jira.jboss.org/jira/browse/JBSEAM-3603
The bug will be fixed in version 2.1.2-CR1.
My problem is, i adopt the progress example to create a similiar feature in my own project. The behavior is just the same as in the example. Can anybody tell me what i have to do to get it working?