Summary
When preparing an agenda, the Agenda Manager site may not display submitted items within the agenda sections when viewing the site with Internet Explorer 11.
Resolution
This issue can be resolved by adding the Agenda Manager site to the Internet Explorer Compatibility View list.
See the following Microsoft article on configuring Internet Explorer Compatibility View settings.
http://windows.microsoft.com/en-US/internet-explorer/use-compatibility-view#ie=ie-11