How human task forms are generated in BPEL11g is lot more different than BPEL10g
In 11g for every task form you generate it will be generated as separate project under same application or in a different application.
When you deploy task form as a separate application (outside of composite application deployment) we should deploy it from application name drop down list but not by right click on task form project and deploy.
If you try to right click on task form project and deploy then you will see error messages like
In jdev
Caused by: java.lang.ClassNotFoundException: oracle.adf.library.webapp.ResourceServlet
in log file
There was a failure when processing annotations for application /apps/domains//servers/AdminServer/upload//app/ Please make sure that the annotations are valid. The error is oracle.adf.library.webapp.ResourceServlet