Grails 2.0 RC3 spring security org.hibernate.LazyInitializationException: could not initialize proxy - no Session

This worked before 2.x, thats why I am not sure whether this is a bug, changed behavior or something else. Before 2.x this worked without needing to add withTransaction to the spring security generated classes, hence this should either be a JIRA or be added to the documentation.

Is the correct behavior to fail? Why did it work in Grails 1.3x then?

I understand the call chain is: controller (prototype), sitemesh/layouts, taglib (singleton) - so when in the User code do we have a session (because it all originates from the controller) or dont we because its called by a taglib?

Unlike in http://jira.grails.org/browse/GRAILS-6701 where a view is mapped directly i am using a controller in URLMappings
"/"(controller:"start")

This may be related: http://jira.grails.org/browse/GRAILS-5911

This how i had to fix in the plugin generated User.groovy:

Set<Role> getAuthorities() {
UserRole.withTransaction {
UserRole.findAllByUser(this).collect

as Set
}
}

StackTrace - Full Stack Trace:
org.hibernate.LazyInitializationException: could not initialize proxy - no Session
at com.s1.User$_getAuthorities_closure2.doCall(User.groovy:29)
at com.s1.User.getAuthorities(User.groovy:29)
at com.s1.User.isSuperAdmin(User.groovy:32)
at vpmb.NavigationTagLib.getCurrentUsersRole(NavigationTagLib.groovy:203)
at vpmb.NavigationTagLib.buildNavigation(NavigationTagLib.groovy:26)
at vpmb.NavigationTagLib$_closure1.doCall(NavigationTagLib.groovy:21)
at C_Users_dx_com_s1_vpm_grails_app_views_shared_nav_gsp.run(_nav.gsp:2)
at C__Users_dx_com_s1_vpm_grails_app_views_layouts_main_gsp$_run_closure2_closure32.doCall(main.gsp:37)
at grails.plugins.springsecurity.SecurityTagLib$_closure6.doCall(SecurityTagLib.groovy:138)
at C__Users_dx_com_s1_vpm_grails_app_views_layouts_main_gsp$_run_closure2.doCall(main.gsp:39)
at C__Users_dx_com_s1_vpm_grails_app_views_layouts_main_gsp.run(main.gsp:56)
at org.grails.plugin.resource.DevModeSanityFilter.doFilter(DevModeSanityFilter.groovy:44)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)