Only one page of widgets left: Where are the other pages gone?

I'm running Cyanogenmod 11 on a Galaxy Nexus. Today, with the same firwmare, all of a sudden, there's only a single page of widgets left: When I swipe left or right, there's the usual animation but I'm not moved to other pages.

Incidently, the screen only contains a single point:

I went through the menus in Settings, but found nothing that would look like an option to restrict the screen to a single page of widgets.

Has someone seen this before and knows what the problem is?

Thank you.