I found this issue https://jira.jboss.org/jira/browse/JBAS-5645 while looking for help with a trouble that I'm having with a custom authenticacion form.
My problem is the same described in the link that i have wrote below: the username and password from the form are lost in the method trace when I do the submit via POST. It does not happen when I do it via GET.
Using JBOSS 3.2.6 I didn't have any problem, but runnig JBOSS 4.2.3 I noticed that bug. I know that 5.0.0 release fixes that problem, but for now I can't move to JBOSS 5 and I wonder if anyone know if exists any workaround.
Thanks and excuse my bad english.
That require to port r677 to the 2.0.x branch.