No any error in console. It may be a bug?
In src/widgets/admin.js the Global parameter is used
{ name: 'Global Sidebar', template: 'global', location: 'sidebar' },
{ name: 'Global Header', template: 'global', location: 'header' },
{ name: 'Global Footer', template: 'global', location: 'footer' },
{ name: 'Group Page (Left)', template: 'groups/details.tpl', location: 'left'},
{ name: 'Group Page (Right)', template: 'groups/details.tpl', location: 'right'}