Hi there,
I am getting the same problem with the moodle version 2.9 and the previous answer is not valid anymore. So I have sections and are not being displayed automatically when the date of the "restrict access" option of the section arrives (is always shown by default)
However, if the shown section has questions, and the "restrict access" field of the question has been filled out, it is working: it will be hidden till the date arrives.
Thanks in advance for your answers.
BR,
Maria