Visibility of Action Container

Hi all, open the page 99000786 in design mode and go to the Action Container. As you can see, there are two containers: Navigate (RelatedInformation) and ActionItems. If you run the page, those tabs are not visibile and if I add some actions to one of the tabs, I cannot see them into the page runtime but just in the Page Preview mode. I dind't find any property or line of code telling the system to hidden the two TABS, so I cannot understand this behaviour. Does anyone knows this?
Thanks in advance
Marco