2.8RC2 Include Elements: bug or misusage?

Hi all,

I am testing/developing with 2.8RC2 and I want to create an article with an element of type Include Elements:

Althought I have several pages, with aliasses and teasers, nothing shows up in the dropdown box if I choose Article, Content Element or Teaser. The drop down box Referenced Element just shows nothing.

Is this a bug or am I doing something wrong here? Any help is being appreciated, because I'm stuck here.....

Thanks, Paul

It is a bug.... I've posted it to the bugtracker.