WebSphere 8.5.5: Security Role to User Group Mapping Not Working

I have set up a couple of different WebSphere environments but have not run it to this problem before.

I am trying to set up the Security Roles for JTS.  I get to the "Security role to user/group mapping" screen.  I am able to display my list of available groups.  I select the group I need, click on the "right arrow" to select it, and nothing happens.  The group is not selected!  I am trying to run LDAP.  I've tested my LDAP settings and they are all ok.  I can't find anything in any log files.  Any ideas?