Both "advanced" theme and Admin Console of In-Portal are using jQuery 1.4 version. With new web browser versions coming out all them it's hard to figure out why some stuff broke. And after upgrading a jQuery it's magically fixed.
Better upgrade now, rather, then trying to debug mystical problems in code.
Related Tasks
Error rendering macro 'jira' : Unable to locate Jira server for this macro. It may be due to Application Link configuration.