XUI doesn't specify realm when using authlevel

If using a URL such as:
http://openam.example.com:8080/openam/XUI/#login/&realm=intern&authlevel=2

When selecting a module from the list, XUI does not appear to specify the realm 'intern'.

—

To reproduce:
1. Create a sub realm 'intern'
2. Add a new authentication module to this realm, set the authlevel to 2. The module name should not exist on the top realm.
3. Repeat step 2.
4. Retrieve the list of modules and make a selection. i.e. http://openam.example.com:8080/openam/XUI/#login/&realm=intern&authlevel=2
XUI should show 'bad request error'.

Workaround:
Disable XUI

Example of debug log with legacy UI:
amLoginViewBean:04/02/2015 12:34:03:519 PM BST: Thread[http-bio-8080-exec-6,5,main]
getEncodedQueryParams: parameter is:realm
amLoginViewBean:04/02/2015 12:34:03:519 PM BST: Thread[http-bio-8080-exec-6,5,main]
getEncodedQueryParams: parameter value:2
amLoginViewBean:04/02/2015 12:34:03:519 PM BST: Thread[http-bio-8080-exec-6,5,main]
getEncodedQueryParams: parameter value:intern

Example of log with XUI:
n getCallbacks() callback : javax.security.auth.callback.ChoiceCallback@2f4d2ad4
amAMAuthUtils:04/02/2015 12:35:50:576 PM BST: Thread[http-bio-8080-exec-6,5,main]
realmQualifedData : ActiveDirectory
amAMAuthUtils:04/02/2015 12:35:50:576 PM BST: Thread[http-bio-8080-exec-6,5,main]
DataFromRealmQualifiedData : ActiveDirectory
amAMAuthUtils:04/02/2015 12:35:50:576 PM BST: Thread[http-bio-8080-exec-6,5,main]
realmQualifedData : ActiveDirectory
amAMAuthUtils:04/02/2015 12:35:50:576 PM BST: Thread[http-bio-8080-exec-6,5,main]
RealmFromRealmQualifiedData : null
amAuthUtils:04/02/2015 12:35:50:576 PM BST
...
amAuthConfig:04/02/2015 12:35:50:576 PM BST: Thread[http-bio-8080-exec-6,5,main]
newConfig, config not defined MODULE=ActiveDirectory;ORGANIZATION=dc=openam,dc=forgerock,dc=org;CLIENT=genericHTML
amAuth:04/02/2015 12:35:50:576 PM BST: Thread[http-bio-8080-exec-6,5,main]
ERROR: JAAS module for config: MODULE=ActiveDirectory;ORGANIZATION=dc=openam,dc=forgerock,dc=org;CLIENT=genericHTML, No Configuration found|noConfig.jsp
amAuth:04/02/2015 12:35:50:576 PM BST: Thread[http-bio-8080-exec-6,5,main]
AuthLoginException
com.sun.identity.authentication.spi.AuthLoginException: No Configuration found|noConfig.jsp
at com.sun.identity.authentication.service.AuthUtils.isPureJAASModulePresent(AuthUtils.java:1496)