Plone 4.3.19 new collection type missing location add button

Dear Plone developers,

i have a missing add button on the collection content type criteria edit section.


Any suggestions why this is happening ?

What if you click on the Select... drop down. Isn't that the place where you can add new criteria?

Its the 'Add' button for interactively searching for the location to entry which is missing. At least the plone documentation at documentation is recommending to use such a button..

The workaround is to enter the related path by hand.